I think most people bashing this game are just upset that they can't just run and gun through maps, and at times have to work to use the shiny pieces of equipment. A monkey with a stick can play run and gun mode.
I generally stay away from games like this due to the lack of realism, shoddy graphics and piss poor performance issues. My standards of a good game are pretty high.
Although there's a few realism issues here and there, nothing worth not playing, absolutely not. At times there's a bit of lag, but I don't see people warping all over or continuous crashes etc etc.
This game here is nothing like any others out there imo. It has set the standards for the next gen of these games and to me, has finally advanced the gaming world. All the other games that are coming out are poorly done, unfinished and rushed to release to please some sponsor out there.
You don't like this game, take your monkey stick back to CoD or something.