What impresses us the most about Ninja Gaiden: Dragon Sword isn't necessarily that it looks so amazing, or that it is such a rare genre for the DS. We are just so damn fascinated by the idea that Team Ninja could take a fantastically different control scheme with just one analog input and one (functional) button, and map pretty much the entirety of the Xbox Ninja Gaiden moveset to it.
With the stylus, the experience is completely different, but it's still undeniably Ninja Gaiden. And that is clever. Would you know from looking at these videos that the game was being controlled by dragging? Doesn't it look pretty much like any other modern action game in motion?