Pekovic vs. Vucevic

I realize that Pek is a free agent while Vucevic still has years on his contract, and Vucevic is younger than Pek. Given that that they share the same nationality, my question is what are the differences between Pekovic and Vucevic? Pek is obviously more realistic, as he is a free agent, but what is the difference in their games? In my opinion Vucevic is the better pure rebounder while Pek has a more refined offensive game. What say pelicans talk?

ETA I think it's relevant because Vuc will be coming into his prime when AD comes into his own.