OK, I misunderstood it.
In fact, you're right, but it's just because personally I am more fond of graphics. than gameplay.
I got Bioshock and Crysis and Frontlines Fuel of War only for the graphics. I just admire going around and seeing the details.
I stopped playing Bioshock when the themes started repeating. I didn't play Crysis and Frontlines at all. I didn't delete only Crysis from my PC, because of the Sandbox World Editor.
Can't wait to get the good VGA and do some stuff there.
I play only on GTA and Call of Duty. These are the only games I can't stop playing.
The other seem all same to me, except when they got cool graphics like Assassin's Creed.