I've been reading numerous threads across a couple of sites and from what I can gather is the only reason why people have been banned these past couple of days is due to cheating. I don't think playing online before Black Ops 2 release date had any reason for ban. I say this because I was lucky to go to the COD Xp event for the MW3 debut and every attendee received a founders edition of the game. I received the game one day in advance before release date and was playing online right from the start without problems. My point is playing before release date has nothing to do with bans. I noticed there were people already at lvl 40+ before release date when I went on. Nothing strange because they probably recieved their copies in advance. So far all the bans were due to cheating. Correct me of I'm wrong but i havent seen a single person who has been banned for just CFW.
Playstation 3 Fat 80gb + 2.5tb Ext. HDD 4.46 CFW Rogero
Playstation 3 Slim 160gb 4.x OFW