I think Groce did a great job evaluating talent. He just failed to sign most of them or put all his eggs in one or two baskets with a few top high schoolers like Evans, CA, Bragg and a few others and transfers Evans and Clarkson. Then was unsuccessful due to not enough of a backup plan. Plus some players like Nunn or transfers like DP got in trouble. Evaluating isnt where Groce failed. He was often among the first on a player. When he didnt get plan A or B he didnt have a good plan C ot D.
When BU the staff are out there recruiting it i's clear there is a difference in how he spreads his staff around looking at lot more globally. He certainly isn't concerned with others rankings.
The other point that I don't see on the recent posts at least is you can't really compare the players recruited by Groce vs. Underwood because their systems and style of play are so different. BU clearly targets players that he believes fit his system. He appears to be somewhat in that "positionless player" camp where players rotate between 3 or more positions.