This story is epic, but it exists in such a larger context. So many of these characters have amazing back stories. It's just one battle in a 100 year struggle. The TV series which came a year later is comparable to 'Game of Thrones' in it's vision.
Not quite as great as Part I due to a rather slow start and some goofy comedic flourishes I could have done without (yeah I know its a Chinese thing) but the epic and fiery climax makes up for that big time.