One pretty big difference is that Ledger has the unpredictability. Leto felt pretty predictable throughout SS, but we weren't sure about what Ledger was up to, or what he would say, or really anything. read more
It's a little hard to say definitively since we have such little info on Leto Joker, but if both are equally influential rival mob bosses in Gotham city, I'd bet on Ledger's Joker being able to outsmart Leto's. read more
Ledger would go on to win a posthumous Oscar for Best Supporting Actor, an award Jared Leto himself would win a few years later. Recently, Leto told Rolling Stone how he felt following in Heath Ledger's footsteps once again. Heath did an impeccable, perfect performance as the Joker. It's one of the best performances ever in cinema. read more
Jared Leto’s Joker lacks any form of subtlety or nuance, while people are still arguing over whether or not Heath Ledger’s Joker was the villain. Jared Leto can’t even admit that he finds a coat exciting, Heath Ledger died after playing the role in question. read more
I guess because of his gang, Leto Joker would win but honestly, we all know Ledger is a lot smarter, cunning, decisive and probably has a lot more skill in hand to hand combat and with military grade weapons. read more