Word of mouth travels fast, if some casuals realise how shockongly bad this "next-gen" fifa is, they will tell their casual friends who in turn will tell their friends....and so on...
I predict Dreamcast type numbers for 360, people will wait for PS3 once they realise how mediocre the line-up of 360 games is. Actually MS might even do worse than sega, dreamcast was technically leaps beyond competion (n64, ps). Can't say they same about 360, sure it's prettier but not that much prettier. Imo there was a bigger jump from ps2 to xbox than there is from xbox to 360.