There are 6 games I never played (Bayonetta, Fifa 10, Tekken 6, FFXIII, DS, RE5)
From those I suppose FFXIII and Bayonetta can stay.
From the games I did play there are 7 games I don't think are that great.
I would remove Flower, Heavenly Sword, Heavy Rain, Burnout Paradise and R&C
Then I'll add in Call of Duty 4, Street Fighter 4, Oblivion, Bioshock, GTA IV, The Orange Box, Valkyria Chronicles, Battlefield Bad Company 2 and Infamous
Personally I'd add Motorstorm Pacific Rift too.