Here are previous first weeks for fighting games this gen.

MK VS. DCU - 265k WW
Street Fighter IV - 978k WW

Mortal Kombat - 730k WW

Super Street Fighter IV - 488k WW
Marvel VS. Capcom 3 - 657k WW
Tekken 6 - 520k WW
Soul Calibur IV - 679k WW

MKVSDC has the lowest of those, but obviously that didn't get a fraction of the attention MK is getting.

I voted 700k - 799k, MK has captured peoples attention outside of the standard fighter fans. But I don't think it can eclipse SFIV.

I say 700k - 799k as well.

I vote for 600k-700k. A lot of gamecube and xbox owners that got an xbox 360 where extremly hyped for soul calibur 4 because of how amazing soul calibur 2 was and they didn't get to play the slightly dissapointing soul calibur 3 so their wait was even longer for a new soul calibur. Thats why it is the only big fighting game to sell more on the 360 and by a pretty significant amount. I don't think mortal kombat has that kind of hype on the 360. It will outsell the ps3 version first week and lifetime but that will be negated by the lower 360 sales first week and lifetime.

I hope it sells 750k or more first week because it is old skool MK and from what I have experienced from the demo, it is also absolutely awesome!

Might be the MK fanboy in me, but I want it to sell the most and score the highest, it just looks soooo much better than SF, I don't get how SF did what it did tbh ...

This is a tough one. I would say 550-650k on both consoles combined. Its hard to tell how many fans have moved on and how many newcomers there are.

I hated SFIV. The gameplay was really slow and jumping was pointless because it seemed to move in slow motion. More floaty than Sackboy jumps. Actually, thinking about it, Sackboy would have fit perfectly into SFIV considering how slow the gameplay was.

MK is faster, Sub-Zero is awesome and I have already figured out some bad ass combos for Scorpion. Not only do we have the ladder, but we also have "Test your might" back plus so many other cool minigames. Just everything about this game screams awesome.

It better fucking score high and all you gaming bitches better buy it! I turned down Crysis 2 for this game. Although understandably so... easily understandably so. 

I just hope it gets something like 92, something deserved. Although 85 would be like a franchise record I think!!

I just bought the new 360 controller with new Dpad, so hopefully that enhances the experience for me, and I plan on getting the Kollectors edition first day, can't wait!!!

Another thing that makes MK9 is that this guy is in it.