How can you place a bet on an opinionated question such as this? Both did outstanding jobs playing the role.

I've said this before, and I'll say it again (and in agreeance to Mr.KIDD). You can't compare the two. The joker for the old Batman movie was supposed to be based on the character and comics from that time period. Nothing was really DARK about the series then. You had a crazy guy commiting crimes, would get thrown in jail all the time or barely escape, and that kept the series going.

Now you have a new crowd to appeal to, one that wants it to be like a giant graphic novel. Thanks to all the horror and dark stuff that happens in both movies and GNs, it's expected that the role would have to reach out to that crowd. That's what Heath was going for. They didn't want character developement with the joker. They wanted the movie to feel more "real", with a crazed psychopath running rampant creating destruction.

It's a tie really. You can't say one did better than the other. Jack did the role VERY well for what it was targeting, and Heath did the same.