I never actually looked at Sam and PJ's stats. Statistically we have an upgrade.
Stephon is already starting to look better than Sam. I expect Stephon to be even better by the time the playoffs start.
Mikki will be able to give us a jumpshot in the 2nd unit, and hopefully his help D will improve. Thats where his length can help with deflections.
Also Powe and Davis are better. So...
Stephon >> Sam
Powe 09, Davis 09, Moore > Powe 08, Davis 08, Brown
But Walker, (Scal, TA if they come back) << Posey
Then again...
Rondo 09 >> Rondo 08
So if healthy, we could have a better team than last year.