I'm going to start this review by talking about the SNES and Genesis versions of MKII.  Many people believe the SNES version to be superior, but if you really get into both versions the Genesis version has one extremely enormous advantage.  It controls better, plain and simple.  MKII has many combos to pull off and the SNES version's timing is just slightly off or slow and makes it much harder if not nearly impossible to pull of the difficult ones.  The Genesis version on the other hand moves much more fluidly and the characters respond to commands faster making combos much more like the arcade version.  I believe that all of this is due to the faster processor in the Genesis, while the slower one in the SNES causes its version to be clunkier.  Does the SNES version look better? yes.  Does the SNES version sound better? yea. But if you are really devoting some time to get good at the game the Genesis version comes out on top because the characters do what you want them to do.

Now lets get into the meat of this review and compare the 32X MKII with the SNES MKII.  As to which one looks better is probably the thing at which they are most equal.  They both look great.  The 32X add-on allowed the Genesis to display many many more colors on screen at once (I believe even surpassing the SNES), Allowing the Genesis to rival the graphics of the SNES version if not surpass them.  There is a certain sheen to the SNES graphics that make determining which is actually the best looking one a rough choice.  

In almost every other aspect the 32X version is best.  The control aspect I described earlier carries over seamlessly into the 32X version if not being even slightly more responsive.  It really makes the SNES version feel so unresponsive.

The Genesis was never known for good sound but the extra power of the 32X  add-on really helps achieve an almost arcade perfect sound track.  There are a few sounds missing from the arcade but not many.

The biggest complaint I have with the 32X (and all versions) of MKII is the difficulty.  Even on very easy the computer will spam the heck out of you and really make you learn how to get good at the game.  Even when you get really good at the game the later characters get so tough it seems like you need a little luck on your side to win.

With all that difficulty comes a surprise bonus though, you can get really into the game as you get better and start pulling of some really complex moves.  You just want to crush that cheap freakin computers butt that it can really motivate you to become an MKII master.

As far as everything else MKII has to offer the 32X version has it.  All the fatalities, animalities, and babalities are there.  Along with numerous other secrets like Jade and Smoke.  So to sum it up here Mortal Kombat II was an instant arcade classic and if you want that experience in your living room the 32X version is the way to go.

Well, never played MKII for the Genesis, but I spent a little time that being said assuming what you said about the game running faster then I'd have to agree this is the better game, graphics don't make a game, especially when it comes to fighters, at least by my opinion, as an person who plays fighting games more than any other type of game I can tell you (whoever is reading this that is.) that fighting games are awful when there is a slow response to button input, be this lag, the game, or a shoddy controller.

One of the things I like about the newer BlazBlue is that the games more fast pace than previous installments which allows for more intense high-speed game-play and competitive aspects, you should see the people that went to EVO, they're insane, I doubt I'd stand a fighting chance and I mean I think I am at least above average.

Frodlex : Yea I'm good at fighters to but those Evo guys are hardcore.  They would wipe the floor with me.  And trust me the clunkiness is the for SNES but the internet seems to ignore that for some reason.

The focus on this review to pick out which home console is best feels strange to me.  Vizzed also has the MAME version of MKII.. so in comparing apples to apples, if the 32X is better than SNES and Genesis versions, wouldn't you still just play the arcade version for the best experience? 

endings : Good point, changes things, that being said I think he's more referring to the point in time where this was likely to be played in an arcade or the current consoles, and I think he's referring more to that time period, that being said I want to hear what he has to say, however I don't know what his outlook will be on this situation.

endings : They're unbelievable almost, I've fought with a couple and even call one my friend, he claims he isn't even going at 30% of his characters potential max when he fights me and he still wins, don't get me wrong I'm not sloppy but I'm still inclined to believe it.

EDIT: I am so sorry for the double summon endings, I meant to summon fightorace but apparently I overlooked it and typed your name instead, apologies.

endings :
Frodlex :  

I had a feeling this question would come up and Frod is on the right track as I grew up in that period and so my experiences leak through in my review.  I started by comparing them to show that MKII 32X is a good version of the game.  And if you will notice after the first paragraph I focus mostly on the 32X version and don't mention the SNES one as much.  It is a review of the 32X version I just used comparisons to back up my thoughts.  

fightorace : I also grew up in this period, though I stuck with Nintendo for awhile, and let my friend buy the Segas and later the 3DO and such. It was an interesting, hectic time. 
Probably this is the version you have the most knowledge of (thus why its reviewed), I just found it unusual to mention the Genesis, the SNES and all versions difficulty (presumably arcade included) but not really reference the original. I don't think this is a bad review at all, its quite detailed. I just wondered if you had missed out on the arcade version.

endings : actually I started with the arcade.  So much so that I played betas of MKII in the arcade that most people have never seen, ever heard of doing Sub Zero's Eternal Freeze during a match, not as part of a fatality?  I compared it so much to the SNES and Genesis version because I think those are the versions that most people have played and related to therefore understanding the points I was trying to make.  But all feedback on my reviews is appreciated.  Also this was only my second one ever and I think it took a huge leap over the first one because I followed a "critics" advice.  So thanks for the input and I hope I have sufficiently answered your questions. 

tornadocam :  I just don't get why the internet rarely mentions the control issues with these games.  Any fighting game fan will tell you how important controls are, yet the internet glorifies the Snes version because it looks and sounds better.  I just don't get it.

Not a bad review. Another good job done by you. Keep up the good work.