Personally, I see more Ziggy Ansah than JPP. As a junior, JPP was built much leaner than Kongbo and was, IMO, more athletic. Dude could do backhand springs all down the football field at 6'6 250. At the college level, his game was all about explosiveness, speed, and get off. The reason he didn't go higher in the draft was because teams were worried he would get bullied and overpowered in the run game.
Kongbo, on the other hand, has looked to have a bit more power to his game thus far. At 6'6 270-280, he's already the same size JPP is as an NFL veteran.
Edit: Didn't realize than Ansah ran a sub 4.6 40 at 270 lbs though...might not be a good comparison.
Keep his away from fireworks