I see where you're coming from, but I don't think it seems like CoD at all. The only thing that seems like that is the loadouts and the armor upgrades, but even then those don't really change it that much. There is so much inside every video game these days that its always going to seem like one is copying the other, but all their doing is moving forward. The assault rifle has always been pretty strong, but it can still be beaten by a DMR and BR if you miss just a couple shots. The lag though is really annoying, but they do have a massive amount of people playing and I bet the servers are getting a run for their money. It seems that between CoD and Halo, each will soon have things that the other one has.