Lol @ at this thread.
How could the Green Goblin possibly stand a chance against the Joker? 😛
Seriously, though. The Joker is just an insane, brilliant human. Green Goblin is superhuman, and has access to superior, high-tech weapons as well as his own considerable wealth. Joker dies, but I'd say he should be able to scrap GG's armor... lolz.