Red Bull: Vettel will be occasionally matched by Webber but not enough to make a difference. Vettel clear leader and probably another WDC.
McLaren: Hard to tell since Perez is young and talented. Button's steadiness should prevail at the end but the Mexican might pull out a few surprises.
Ferrari: Providing Massa is allowed the same previliges as Alonso and given a free hand to race (and assuming what just flew past my window was a bird and not a pig

), things should be closer between the teammmates but Alonso should come out on top.
Lotus: Raikkonen the clear leader irrespective of who his teammate turns out to be.
Mercedes: Very interesting. Popular opinion says Hamilton should finish in front of Rosberg but one never knows. I prefer to wait and see on this one.
Sauber: I expect Hulkenburg to do well, probably even a race win by the end of the season.
Williams: Probably Maldonado ahead, but will all the expectation surrounding Bottas, the youngster may get close towards the end of the season.