This conversation iw waaaayyyy premature after one pre-season game; however, if we are going to have it....
Donte is nothing like Peja. I get the "points only" comparison, but their games are very different. Peja was/is one of the purest shooters in the league, who also became a very good cutter, but he was never great at creating his own shot. Donte seems like a pontentially very good shooter, but not as pure as Peja. However, he looks like has the speed/athleticism to creat his own shot better than Peja ever did. Similarly, he has the potential to be a much better defender because of those same attributes. Overall, he can be an elite scorer and plus defender if he develops right. A great building block, but he will need to develop his passing or rebounding better to be a true star player.
Instead of Peja, I think it might be fair to say that Donte could be a Corey Maggette with better defence and hopefully much better decision making.