Well, early game he doesn't do much dama--huh, nevermind.
Okay, well late game he'll pop in teamfights since he won't be very tan--oh.
The important thing to remember is that, yes, Riot lets him do damage and be tanky, but this is balanced by a lack of CC in his ki--s***.
Well, despite the CC, damage, and tankiness, he really has a hard time getting onto his targets due to his lack of mobi--f***.
Yes, it seems like he has it all, but in prolonged fights he falls off due to his lack of shields and sust--ugh.
Okay, but the problem with Lee is that he has to manage his abilities carefully, since he's gated by mana cos--oh Jesus.