When he's on, Marble is a nice scorer. He can't do much else, he's not consistent, and he lacks heart. Congrats to him for tricking someone into a shot, but he's not a pro.
The Magic GM had quotes (in the DM Reg today, btw) about how versatile and well rounded Marble's game is. Lots of scouts had similar notes leading up to this draft. Again, not a shock he got drafted in the 2nd round. Its not like he was taken #2 overall.
Also, you make it sound like the kid lied on his application for a job or something when you say "congrats to him for tricking someone into a shot". Then adding in "he lacks heart" convinces me you just really don't like the kid and are throwing **** on the wall and seeing what sticks.