All and all, if you had a choice which would you prefer...
Perkins develops a killer Sky Hook, thus forcing perpetual help defense every time the ball is in his hands for either the patented Kareem play or a kick out to a shooter (whomever it may be at the time) or a back cutter to Pierce for a slash to the rim.
Rondo can do a pull up jumper like former Celt's Killer, Andrew Toney, thus forcing a man to constantly cover him for the entire length of the game. This will allow periodic 30 pt outings from RR at 55+ FG% when the rest of the C's are slumping from the field. And of course, in a normal game... 18 pts, 12 assists, 2 steals, 2 boards.