None of us know a damn thing about him really, but this is cherry picking stats in the extreme.
So the year before this two-year sample he shot 40.9% from three. Then the year after this two-year sample he shot 41.6% from three. I have no idea what changed (or if anything changed) other than his number of attempts increased quite dramatically in his final season.
The truth is probably somewhere in the middle as the college game has shorter seasons and the samples are thus more vulnerable to random variance. We're really only looking at about 1.5 NBA seasons worth of games. If we take his true average over the four years we return with an average of around 37%. That's passable for a guy who scored 22 a game. Not certain we could have asked for too much better in the mid second round.
We'll probably never see him do anything meaningful on the team, that's pretty par for the course for mid-second rounders. Or he might be our next Millsap. No one on this board is really in a great position to know.
At a minimum, we know his college 3 point shooting averages are better than Wesley Johnson's.