Honestly, since this was first time playing with roxas and the nintendo ds graphics, I would say so. Because there were a few glitches that were rather bothering.

Not really, the main thing I found hard to do on days was fighting the bosses. It was hard trying to look at both screens at one time. Xion, was the hardest boss to beat. 4 times that is lol.

I beat it in about 3 days straight since I was off of work. The only problem I had was doing the tutorial levels with the other organization members, such as marluxia. And I pretty much skipped the story mode and went to the battle field.

For me the graphic had nothing to do with me beating the game. I thought it was challenging at first because it was first playing kingdom hearts on the Nintendo DSi, but nonetheless, xD I thought it was pretty easy. And the Xion, fight was pretty easy to me too.