2012 for the main part was not good. The main groups (OF, YMCMB, MMG, FV, G.O . O.D) had some up and down situations.
MMG other than Rick Ross (who's album wasn't spectacular), Wale, and Meek Mills I believe, hit on little.
OF failed with No Idols and Numbers, but channel ORANGE was spectacular, and that's the reason they aren't being smashed right now. And The Odd Future Tape Vol. 2 was early, but Earl did come back so I digress.
YMCMB - Lil Wayne, that's it. Take Care early, early, early, um what did Nicki Minaj do? I don't even know.
FV stalled the hell out of Knock Madness, and still won't release it till 2013. Dizzy had to release an album for FV to have anything. But Jarren Benton gave them needed momentum. SwizZz is lazy
G.O . O.D - Probably the only consistent performer here, Cruel Summer, Based on a TRU Story, Detroit (Big Sean), Watch The Throne, and whatever Pusha T did. They are the best group this year, especially by financial standards.
Kendrick grinded and should be counted as best rapper of this year. GKMC is album of the year.