Whether or not the ME2 comes to PS3 hinges on what kind of deal MS made with Bioware before they were purchased by EA. If MS had an exclusivity deal in place before hand, EA would be able to release any ME titles on PS3. I don't think that is the case because if it were, I'd think EA would have released ME1 on PS3 by now.
If the MS's contract only covered the ME1, MS published Mass Effect and paid for its development, then ME2 and ME3 could appear on PS3. If that is the case, it puzzles me why there has been on announcement thus far.
Honestly I think some sort of deal was struck. What it means for a PS3 versions of ME2 and ME3 I don't know. EA doesn't make exclusives. Yet, they had to concede something to MS for the PC publishing rights to ME1. Since their has been no exclusives titles released by EA on the 360, you have to wonder what EA gave up to get those rights.
