^ The above is trolling (and if you don't intend it to be I suggest writing in a different manner), and this is coming from someone who thinks both bf3 and mohw are much better games (I have yet to try out the new ghost recon and am waiting for steams summer [or winter depending on where you live] sale).
BO2 has a lot going for it, it campaign does collapse on itself around half way through. But the coop and competitive multiplayer more then make up for it (at least on pc).
To me it felt the exact opposite, i didn't really give a carp about anything for the first half. Of course i was still getting used to the button layout but i generally didn't care about the characters at all until halfway through.
The good thing about the online in BO2 WiiU is there are hardly any 12 year olds which makes the experience much more enjoyable.
The game felt optimised probably and didn't suffer any lag in the gameplay (at least for me it didn't) making the AC3 port feel like absolute rubbish. I give it an A.