They live in different age,so it is no meaning to argue who can win.
I just know in Lee's age if someone say:"I'll KO you,Lee."He shall die.
Childish to say,if Tyson live in Lee's age,Lee must KO him,because Lee is go to his life and Kung Fu's zenith,no one can challenge him,it is very hard to improve himself.
By the way,Tyson hit by someone in the prison,so he no competence with Lee.
(a Chinese Jeet Kune DO student let me translate this one.)(My English is poor.I think you read this hardly.)