It's probably just me but I think with both deals the C's come out losing in terms of talent. I don't see the team as truly better with Pau instead of Rondo.
As for Sessions, I wouldn't flip Dooling and a 1st rounder for him. Maybe Dooling and Cle 2nd rounder we have in 2013. Sessions would be a nice backup for Rondo but I'm not keen on him as the starting PG for a championship team.