I loved TechStars but the WSJ analysis seems flawed. Primarily because I think that data is stale (there are definitely zombie/dead companies counted as "active") and a category like "acquired" it too vague. The way it reads it seems like that was a good outcome (and for companies like Gradcad it was!) but many others it is basically acquihire.

There was a good conversation between Dave McClure and Sam Altman about value of the grand slams vs singles/doubles: http://www.youtube.com/watch?v=489JA4ERzUY