I played it, I mainly like ground war. But it still has a long way to go I believe. I think BF does it better, particularly in BF4. The new BFV is kinda lame though, but BF4 is still best.
If COD MW could get larger maps, and particularly more emphasis on ground war, it could be better. The maps feel to cramped and such. Also, it needs more weapons to unlock. BF4 had a ton of weapons on each class, where as COD MW has many less.