If you still think it's a luck punch watch the below video at 7:01 and you'll hear McCall clearly say, "Come back with the short right hand." after Manny Stewart talks about countering. Then he lands a short right hand counter that wins the fight. It's as clear as day, so before you call someone an idiot, maybe you should check what actually happened.
The fact of Lewis being over-confident is damn clear, I'd like to see how McCall would land it on the well-prepared Lews. Ah, the rematched showed it.
And I didn't call an idiot anyone personally. It's seems like you made the needed conclsion.