MW3 featured collecting dog tags. Maybe not to get killstreaks, but it still seems weird. Black Ops 2 features a microwave turret, "oddly" enough we have a microwave gun in Crysis 2. Black Ops 2 features campaign perks, and again this is something we had in Crysis 2. Anyone think this is mere coincidence?

You copy me, I copy you.

Quite a lot of things were copied from crysis for mw3..

Dog tag part sounds like it's taking it from Battlefield 3.
If I remember correctly, they came out almost the same time?

I thought this too with the Kill Confirmed mode in MW3, pretty much a direct lift from C2.

For blops 2 I can't remember what they were calling them, but the single player sections they were demonstrating as being more "sandbox" in layout. You say "sandbox shooter" and you immediately think of the original crysis.

Also the near future setting and a laser attachment on the M8A1 make me think of crysis too

Kinda funny, CoD shifting a little towards crysis style, while Crysis shifts alot towards CoD.

One of the rifles I saw looks like the SCAR

You forgot to mention that Black Ops 2 has some sections were you have to choose between two play styles similar to Crysis' sandbox nature, though in Black Ops it's presented in an unnatural way, you reach a certain situation where you have to choose between attacking in classic COD fashion (rushing from cover to cover with endless waves of enemies) or stay back and give sniper support (for example)

But as you can see both options still are classic COD, so it gives you a fall sense of freedom instead of giving you a map and saying "complete your objective in any way you see fit", of course in COD 90% of the objectives are "get from point A to point B shooting soldiers" with the occasional "get a powerful weapon and bring down a chopper"