you're insane if you don't think art had an obviously high ceiling as a freshman. he's actually been a bit of a disappointment in terms of development. it was reasonable to project as a freshman that his 3% would be significantly higher than it has been (some of that, i think, is how miami uses him, but that's not a data-based argument).
unless stokes has the ability to go by his man at will maintaining balance and court vision as well as incredible defensive instincts (balance, again), he's not comparable to art.
I thought Art had a high ceiling as a freshman. I think Stokes has higher.
I think people forget that Angel was actually pretty bad in many games as a freshman. If I recall, he really started coming in to his own about this time during his freshman year. I seem to remember a late road win at MU where I was like "yeah, this guy is going to be really damn good." (A sweet split of a double on a pick and roll, followed by a perfect alley-oop to JO, sticks in my mind.)
But, his shot was slow, his feet were slow on defense (compensated for, though, by his quick hands and good instincts), and he was shaky dribbling against heavy pressure/good defenders.
But, we don't need to turn this into an anti-Art thread, because that isn't my point. Playing point as a true freshman is damn hard; both Art and Stokes showed incredible promise in doing it.