I\'d say that CTHD had a better storyline, and more in-depth characters (it was certainly longer), but Iron Monkey IMO had waaaay better (and more numerous) fight scenes. It\'s closer to a typical chinese kung-fu than CTHD was, that\'s for sure, with some odd (if you aren\'t used to it) humor and fantasy mixed in.
BTW - How DARE you watch it dubbed! Movies like Iron Monkey, Crouching Tiger, Run Lola Run, and Like Water for Chocolate (Como Agua Para Chocolate), are MEANT to be watched in their original languages!