I'll admit to not seeing much of either, but what I've seen from Wiggens is that his game is already adapted to the style of the NBA, his athleticism is off the charts crazy, and he's got ungodly potential. Parker is more polished, but I guess we'll see who's right come March.

I agree with the athleticism part, but i've seen so many athletic freaks amount to nothing because they simply can't develop their skills. Not saying this will be the case for Wiggins, but at 200 pounds, he needs to start bulking up or he'll have no chance of being anything more than a jumpshooter at the next level.
The thing i like most about Jabari Parker is not only is he displaying a tremendous skill set, but he's actually got the size to go with it. He's 6'8 235, similar to Derrick Williams but the biggest difference is Jabari Parker actually has the skillset of a Small Forward while Derrick Williams doesn't. If Derrick Williams had the shooting touch Parker has, he'd be making the Kings look like geniuses.