well i've not played BF3 so i can only say VS Crysis... crysis still wins.
The Engine Looks Great..i had everything on ultra and was pulling 40+ FPS
The Textures don't look so sharp up close, but this is a Serious Sam game so who's got time to stand and look anyway with hordes of enemies wanting to rip you apart.
it's hard to describe the feeling i got when i first played it..
it almost feels like a mix of different games..
for me these games included: Stalker/Fear/Modern Warfare 1/Painkiller/Duke Nukem Forever.
and it's the first in the series where you can perform a melee attack up close..and rip off the kleer's head or the gnaar's eye..
But from what i've played it is a solid Serious sam Game .. and i can't wait to play coop