They weren't good with him, that's the point. Willis shot a high percentage, but how many of those came when the Gophers were already way down and the other team had backed off? On a good team, Willis's numbers likely drop quite a bit.
Okay I'll play your game and pick most of Willis' best games statistically where he exceeded his season shooting %
29 points on 11/18 shooting in a win against Princeton
24 points on 8/15 shooting in a win against Mississippi State
32 points on 11/17 shooting in a win against Rutgers
28 points on 8/17 shooting in a 5 point loss to Indiana
18 points on 6/11 shooting in a win against Penn State
17 points on 7/13 shooting in a win against Michigan
13 points on 5/9 shooting in a 1 point loss to Wisconsin (when he was still sick, a healthy Willis prob puts us over the top)
17 points on 7/15 shooting in a 6 point loss to Wisconsin
15 points on 6/13 shooting in a win over Pitt
Games that could be characterized the way you describe:
24 points on 9/14 shooting in a 15 point loss to Purdue
12 points on 5/9 shooting in an 11 point loss to Ohio State
21 points on 7/14 shooting in an 11 point loss to Maryland
16 points on 6/13 shooting in an 11 point loss to Iowa
I don't think I'm grasping for straws saying a player who was benched after averaging 3 points per game and doesn't play defense, will help significantly improve the Gophers next season. If Walton comes here with two other guards who are better than him, I'm good with that.
Why are you you focusing on his point average on a team that nearly won the national championship? I saw where you described them as an 8 seed earlier in the thread, not mentioning they were a team that had a 15 point lead in the championship. That is weird framing. He did not earn playing time this season for a variety of factors, but he has demonstrated he has the skill to compete and win a starting job at a high level as a freshman.
If he is available we absolutely need to roll the dice on Ben putting him in a situation where he can be successful.