I don't want to get into a whole thing here but being able to play at this level doesn't necessarily mean being able to produce and be efficient in your production at this level on most nights. I'm not trying to insult the guy but you put a just solid defender on him and he's not going to do much. The Clemson game was just the latest example. The fact that he cannot drive with any more than a 25% success rate ensures that the defender doesn't give him any space to maneuver. The way he's defended has little to do with us having no other 3-point options. They're playing him quite ordinarily from what I can see. No doubt, there are nights when he's shooting the lights out but we've played lots of mid-major guys over the years that have done that to us as well. No one thinks that those guys could play for us night in, night out. Sure he averages 14 pts a game. He's also taken the most shots on the team and is shooting 37% from the field. If you look at his game-by-game stats, I think the Nunes example becomes clearer.
We don't (and haven't had) much choice the past couple of years so he gets major minutes but that doesn't mean he's best suited for this level of play and that amount of time on the court. Put him on Delaware and he'd be a terror. If they got a favorable draw in the tourney, he could even go off and help them upset a team or two. But when someone like him plays a Syracuse-caliber schedule, it's hard not to show your limitations over time.