Or Ray Mears. I don't think Barnes is better than Mears, personally. I do think he's better than Pearl, especially if you consider the off-the-court stuff that happened.
Mears won 70% of his conference games over 15 years, Ernie and Bernie show, and supposedly was the genesis for multiple traditions. If he had a modern NCAAT to get into, he would have also been in the tournament basically every single year at a high seed.