Elson hasn't had 1/4th of the career the Big Dawg had, who even at 35 was still an effective scorer, both in the low post and from 18-feet. With the possible exception of Millsap, Carr was also better screen-roll player than anyone on the current team, and could guard legitimate centers - not talking about today's centers, I'm talking about Olajuwon, Robinson, and Shaq. Elson? (Edited to remove massive brain freeze my me where I scrambled Elson's 09-10 season for Johan Petro's).
I think Nenad Kristic is a more viable comparison, which is perfectly fine for your 4th or 5th big.