Jones has a position, or at least has the ability to have a position. Some of it is Greene's fault, and some of it has been the coaching he has received. I can't remember another player who was jerked around as much as he was. PF to SF, starter to 12th man, just nothing consistent for him in 4 seasons.
I think Jones clearly has a better game as an NBA power forward than Greene ever did. He rebounds better, he's stronger, and I think he is just more physical. I was under the impression that Donte never wanted to be a big. He never really wanted to rebound or go at guys in the post. And I'm actually fine with that, its just a shame he never got a real opportunity at SF this season.
In some world, Donte Greene is a starter / bench small forward who can defend and hit open jumpers .. provide some weak side blocking and will always run the floor. He is only 24. I still see potential there. I think he can do most of the things Kawhi Leonard did this season. Keep in mind that the one year Donte did play at a semi consistent level was in 2009-2010 where he played 21mpg averaging 8.5 points shooting .377 from 3 ... which is incredibly similar to what Leonard did this season.