I wish there were an advanced coaching stats database for this. Particularly for VORC (value over replacement coach), wins versus expectation, and offensive and defensive coaching win shares. I would bet Cal's wins versus expectations put him around an average D1 coach, maybe even worse. He might have been a good coach at some point, if super shady, but I haven't seen it in quite awhile.
Unless he stops talking about getting guys to the league and starts talking about winning team basketball, I wouldn't expect anything different at Arkansas.