Ask HN: East coast incubator/accelerator "rankings?"

I was just curious, what incubator/accelerators on the east coast put their funded companies in a better position for success (beit because of alumni network, investor relations, mentorship, culture, etc)? This question arose when I saw http://techcocktail.com/top-15-us-startup-accelerators-ranked-2011-05 . I don't know about the methodology and am looking for more anecdotal type evidence I guess, hah.

The popular ones I know about: TechStars NYC (and why is TechStars performance divided out by location, are the results truly that different?), NYC SeedStart, Betaspring, AlphaLab, Dreamit. They are all in popular metro areas. Alpha and Beta are part of the TechStars network.

Just looking for your insight. Thanks!