It's weird because I rarely heard anything about Colborne having 'big time potential' until the Leafs acquired him. Coincidence?
He still does have big time potential but it's very unlikely he reaches it. I see him more of a 2nd liner... perhaps in in his late 20's he could be a guy that's a 1B center.
And people talked about his big time potential way before he became a Leaf. With his size and skill, there is no reason to think he doesn't have big time potential but it's unlikely he reaches there.
Again, I don't know because I haven't seen much of Colborne, but I have a hard time believing he has that kind of projection if Boston was willing to package him with a 1st round pick for Kaberle.
That Thornton comparison was at draft day but it wasn't like he was being projected as a Thornton V 2.0 for sure, it was just a comparison but if Colborne was like Thornton was at his age, then he would have been a top 3 pick.
He also had a tough year with Bruins AHL team + combined with Boston's center depth, they weren't as high on him anymore. He's doing well with the Marlies though, 6 goals and 4 assists in 11 games (out with concussion currently though).
Anyways, I would say Hishon has slightly higher offensive potential but I'd say it's unlikely either of them reach their potential and become a 1st liner.