I believe you are missing the real purpose of a gaming system. A gaming system, whether a console or PC, is a form of entertainment with many titles to choose from, not just one title (i.e. Halo). Entertainment is meant to be enjoyed. You would really sell your Xbox 360 if H4 is not up to "your" standards?? That's rather extreme don't you think? Funny thing is, you "own an xbox to play halo", seriously?? There is not one Halo title in your recent history, LMAO!! Your topic is not titled properly either and should be edited. Almost as if you couldn't decide what to post on. Subject goes from "selling xbox" to "my opinion of what Halo 4 should be" and then to "PC is better than console". If you choose a topic, try remaining on that topic by making well thought-out and valid points to back up your opinions or back them up by documented facts. If it is opinion, title it as opinion.
I do, however, agree with your opinion that Halo 4 should have "good maps, solid controlled gameplay with a competitive ranking system". This is what alot of players have been asking for.
Oh, one more thing.....Welcome to the forums!!!