I played in the first demo release that was aka the beta and it was great, it seemed to be the first game that had the chance to steal the thunder from call of duty in my opinion.
I constantly have connection issues in the form of lag which in turn cause those with lower or higher connection bars then me to constantly get the upper hand in battle. I have emptied nearly half a mag into someone with the MK.60 and get beaten with the SCAR. Mix and match all you like this happens with any weapon combo.
The killcam is inaccurate nearly half the time either due to the issue of lag or a standalone bug.
Grenades are the bane of my in game existence as after cooking a grenade and throwing it and visibly seeing it in front of me it still kills me when at most it would injure me when in perfect health.
I still stand by my original opinion of this winning over call of duty in my book, but only once the bugs are fix and only then will I return to playing the game.