http://vgchartz.com/swlaunch.php?reg1=Others&game1=Motorstorm+-+PS3&reg2=Others&game2=Resistance%3A+Fall+of+Man+-+PS3&reg3=Others&game3=Gears+of+War+-+X360&weeks=100

 probably resistance 2 or motorstorm 2

In other MotorStorm 2 will win.Racers are more popular there.
But the same cannot be said for WorldWide.

Motorstorm 2 will win.

I am going for MS 2, its splitscreen will get it loads of extra gamers, and I think it will be really well reviewed (not unlike the others though in that aspect). I do think that most people will either go with Gears or Resistance for now, so their sales may be slightly lower due to the sheer number of FPS coming out then (CoD 5 is coming out the week after as well, and Far Cry 2 a few weeks before I think)

gears all the way

I highly doubt it, Gears1 will be beaten by both first games in sales very shorlty.  And we all know the 360 has crashed in others, almost outsold 2:1 this week, and the system is almost half the price of the PS3 in most countries.  The PS3 is going to take off once all the bundles start arriving, and R2 and MS2 will have massive sales.

easily gears of war 2, no doubt about this...

they will only beat it because they bundle every ps3 in europe with either of these to games, gears 1 wasnt bundled to hell like these to games

Motorstorm 2 probaly.

Will Sony keep bundle some games again?