From a recent interview with IGN where they got the chance to sit down with the actor:
Jared mate, you're not Heath Ledger and that's okay.
Hurt me really, really bad if old.
We also asked Leto if he was upset about any of his scenes getting cut as previously reported to which he responded.
Were there any that didnt get cut? Im asking you, were there any that didnt get cut? There were so many scenes that got cut from the movie, I couldnt even start. I think that the Joker we did a lot of experimentation on the set, we explored a lot. Theres so much that we shot thats not in the film.
If I die anytime soon, its probably likely that itll surface somewhere. Thats the good news about the death of an actor is all that stuff seems to come out.
As IGN left the room, we told Leto we hope he doesnt die anytime soon, to which he rather darkly responded We all die.
Jared mate, you're not Heath Ledger and that's okay.
Hurt me really, really bad if old.