I don't see the comparison between Rondo and Thomas at all. Their strengths and weaknesses aren't similar. Thomas was especially strong during the playoffs (unlike RR whose numbers are pretty consistent) and his PERs in his early career are markedly better than Rondo's. Not the defensive player though that Rondo is and certainly not as good a ballhandler as he led the NBA in turnovers a couple of times. I'll go with the Kidd comparison like many others do. Rebounding, defense, a terror on the break, and not the greatest shooter in the world.
As far as Bradley? Who knows. Many are on the bandwagon, but it's too early to say who he is and whether he'll be as good as his recent offensive play once opposing coaches include him in their game plans. Defensively he reminds me of Lindsay Hunter, an undersized SG who terrorized PGs when switched. I think it's safe to say he'll be better than Hunter, who was limited offensively, but had a long career.