oh dont mention ps2 and tech demos, mightyzim will be on your ass with a post that takes 45 minutes to type, saying they delivered and then some.
I would never expect a game that is "cross generational" to look really really good, and comparing them to Gears of War will give you a headache.
Recon 3 is an exception, but Ubi has always done that, look at Splinter Cells, xbox version rocked while pspoo and gamelube versions looked like the hemorhoid on my dogs ass.