From the game text:
Action movies have always been at odds with realism. Fortunately for us, their conﬂict is easily resolved with a series of savage kicks to realism's face! Impossible leaps, insane acrobatics, and victory against overwhelming odds are all staples of the genre... and the essential elements of action role-playing games.
Sadly, traditional RPGs have long been in league with realism. They penalize players who want to, say, kick seven mooks with one spin kick by piling negative modiﬁers onto their roll, which makes them less likely to succeed. The inevitable result is that smart players stick to simple, boring actions and take a tactical approach to combat. Wushu breaks up this insidious alliance with a core mechanic that rewards players for vivid descriptions and over-the-top stunts by making them more likely to succeed, each and every time.