and, fwiw, I'm not opposed to trading one or both of Big Al and Sap, I'd just hate to dump Sap to make room for Big Al, since I'm not convinced he's any better.
This sums it the **** up.
Millsap has a PER of 20.39 and Jefferson has a PER 18.24. Millsap has a +1.2 net +/- and Jefferson has a -12.5, a difference of 13.7 (that's absolutely massive). Those two indicators basically cover the spectrum of importance as fast as you can do it. Jefferson blocks more shots, so why is it that even though they're both starters and share the court most of the game, the defense is more than 10 points-per-100 better with Jefferson on the bench and the defense is 3 points-per-100 better with Millsap playing (a difference of 13.5 points)?
Even if you compare their most basic statistical numbers (which is what paints Jefferson in the most positive light), is Jefferson really worth ~$5 million more per year for basically the same numbers?