Stauskas shot 44% two years in a row from 3 and shot above 85% and 82% from the FT line. He, at least by stats, was the more accomplished shooter.
Huerter's shot looks better and quicker (this is probably the crux of his NBA career, his ability to play off-ball and shoot quickly coming off various movements and actions). He also looks a bit more lean and a bit more explosive vertically. I would say Stauskas was the more advanced playmaker and ball-handler coming out of Michigan.
I think this game from Stauskas is more impressive than most stuff I've seen from Huerter in terms of his overall game.