My opinion as well. I got through most of COD4, it wasn't so great. I beat COD5, and it wasn't anything special at all.
Heck, I don't even remember the mortars.
And Gran Turismo 5 Prologue is not a multiplayer friendly game. Tried it at a friend's house, and I forgot that you need saved game data to get any good cars at all. Didn't turn out fun.
And how do you transfer saved game data on the PS3 with a thumb drive? I tried doing that with Fallout 3 data, it would copy to the thumb drive, but it wouldn't copy from the thumb drive to the PS3. It wouldn't be able to read it.