BF3... the only one i played from the list. have to play U3, Batman AC, and portal 2 but don't had the time yet. the only one i thing might change my vote is U3 but for now is BF3 for me 4 sure... others in the list don't appeal to me, so not worth my time.
Proudest Platinums - BF: Bad Company, Killzone 2 , Battlefield 3 and GTA4