It can't be worse than it is for me now. It's basically unplayable. Usually it takes 2 hits to kill me, no matter what weapon. Sometimes I die in 1-shot, by something that should've killed me in 4. It just doesn't work at all.

I've tried MW2 and it still works perfectly as far as connections go. Hit detection was spot on and I didn't experience any lag. Matchmaking was also faster, which is ridiculous considering the player base is tiny compared to MW3. The only problem with that game is that it's full of cheaters. You run into them in most lobbies you play. Had some obvious aimbotters, some had obvious UAV hacks. Etc. In my expert opinion the only reason they didn't fix that game is because it'd hurt MW3 sales and DLC sales.

COD4 is also full of cheaters, afaik. So these guys have 3 games that are all unplayable, at least for me. Two of them are full of cheaters and one is full of lag. Incompetent devs and terrible support imo. No offense but that's just how it is.