The image of the day is perfection. As much as everyone lauded Jack Nicholson for his performance as The Joker he 'knows' he was bested in every way possible by Heath Ledgers performance.
Meh, that is your perception.
I think his "greatness" is partially rooted in his death and therefore over exaggerated.....
Both performances are excellent for their respective movie and time. In all honesty, I beleive Jack is pretty happy considering he still gets royalties...even off of Ledger's performance. Jack is a smart man.