Holy Uber-Chinese nationalism!
Definitely neither a bad wire-effects movie nor a the worst example I've seen but WOW. A Chinese character, fulfilling classic chinese tragedy defeats the Japanese and American (two long-time non-friends of China) in their prime examples (the cowboy and the ninja) in an oppressed American-Chinese neighborhood in New York, destroying symbols of America and Japan profusely along the way. Wow. :p
This is notwithstanding the 'typical' American and Japanese sayings as well as the general happy goodness of every single Chinese character in the film and the general shortcoming of every non-Chinese character in the film (save, perhaps, Mu, though that's dubious at best).
Either way, enjoyed the film as a whole. Straight 5/10 for certain scenes which were meant to be probably dramatic but just came off as funny.