essentially the trade for the C's is:
Howard > KG
Deng > Ray
Gibson <= BBD
C's get to bring JO off the bench but they're lacking a genuine shooter in the starting line-up. PP has to play SG where he's not as quick as he once was.
I know, C's get the better end of the deal and are set well for the future with Howard, Rondo, Deng, Green, Gibson and Johnson, but I'm not sure that team would win the title even with PP and West.
Good future core that Danny should be able to supplement with decent talent for title runs. Never happen though.