Since this one deals purely with Joker and his life, I think it tends to make a bigger impact on our senses on who/how he was before he became the Joker and his life experiences that pushed him towards it. We connect greatly with the character given the fact that we know where he's coming from and the circumstances that transform him.

I'm hoping to watch the Dark Knight and this back to back someday. Although there will be some differences on background context to Joker's beginnings I reckon given how this one played out.

But now I also have this feeling that Joaquin's performance may just exceed Heath's on a second viewing of this new movie and maybe this is the Joker I would love to see in future Batman movies. Although, I don't know if Joaquin will reprise his role again.