a C0 stepping thats slower than a B2 stepping sure sounds a little off
even if they can reach those specs (8110) with B2 there is no need for a lower model initial since they can earn more per chip, but why even introduce it later since prices will drive down over time anyway.

also a 30w increase for just 200mhz sounds pretty far off, going from 8110 to 8130P

based on that list i see no reason to buy anything other than the 8110 considering we know its not very power hungry and still a good solid 4ghz (and of coarse its unlocked)