To be fair, they're only letting you play one map so far, and they're expecting those low frame rates/lag issues in the early beta, but yeah, it doesn't really seem like a huge upgrade from BF3 so far.
Thanks for the reply i have got GTA V for xbox 360 and i have crysis 3 for xbox 360 and i dont have xbox live so i was just thinking if they had a free crysis 3 multiplayer demo