I've been playing mw3 since the release date and ive been noticing an extreme amount of lag.. Its not me because speedtest is showing up normal for me. I'd get random lag spikes and i'd die out of no where, and in the killcam, the guy randomly teleports and shoots me... And also the hit detection sucks scrotum.. It's worst than the bf3 beta. I'd unload a whole clip on the guy, and hes turn around and 2 hit me... and in the killcam, he gets hit, but no blood on the screen, and he barely flinches... This game is honestly broken and released too early... i was a fan of iw from the start, but its seriously unplayable and sometimes i want to just snap my disk..
i agree i just watched a vid from chris smoove and hes made a video of ps3 gameplay showing the issues you mention