Fight with Masters of Death an anti-climax?

Did anyone else think the fight at the end with the three Masters of Death was an anti-climax? Earlier in the film they are shown as being fearsome fighters, incredibly fast and vicious. But he kills them very quickly, one by one. They don't rush him at the same time, and they seem a heck of a lot slower/weaker than how they'd been presented earlier. I guess this is like so many other movies where the super-tough bad guy turns into a wimp when it comes to fighting the hero, but I found it a disappointment.

By way of contrast, look at Kung-Fu Hustle where the villains - and the heroes - get tougher and tougher and tougher as the movie progresses. As a result, it's much more satisfying to watch. In Shogun Assassin you feel like you've been cheated - the fearsome opponents change into weaklings, and we don't see the great fight of similarly-skilled warriors which we'd hoped for and been led to expect.