1) nobody thought Heath was going to be a dynamic JokerLedger's Joker was a top 20 all-time performance and better than anything Joaquin has ever done, including his great work in Gladiator and Walk the Line. So to hear all of these people acting like this is on par with Ledger has me mad skeptical.
2) Joaquin has a much stronger track record heading into the Joker role than Heath did
3) you seem to be trying to already make up your mind before seeing the movie