If we insist on rehashing the Howland debate, I don't think anyone is saying that Howland got lucky during those years -- those FF teams he had were incredibly good. And still would have been just as good if things had been slightly different and UCLA doesn't make three final fours. I actually think they should have been better considering how ridiculous the talent level on those teams were.
Anyway, the Howland debate isn't whether he coached good teams then (nobody would disagree with that), but rather whether he could duplicate those efforts today. I think it's doubtful, because he couldn't come close to duplicating them the next five years at UCLA and got fired.