Christ, it's really amazing how Ledger is now unmatchable in many people's eyes. I remember the time when no one was even confident in the guy, or at best, had good faith that he could pull it off based on a few noteworthy roles.
Depp has amassed quite a filmography in his career, and is one of the few actors in this generation that can actually promise to deliver a performance that isn't "Johnny Depp as ______". And less we forget, Depp
created a cinematic star that the mainstream has fallen in love with, from a pretty generic "goof" character as written in the script. I don't care if you like it or not, but to deliver a performance that truly resonates with your audience and has become part of modern pop culture is a very admirable accomplishment.
I suggest people look at the roles Depp has done prior to TDK, and compare it to Ledger during the same time. How one can conclude that Depp would not be able to attain the same great bar Ledger did, is baffling to me. Both are considered great actors now, but Depp has more notches under his belt.
The disrespect in some of these posts is nauseating.