Thinking back, how on earth could you pull off a good Mario Bros movie? This probably was the best they could possibly do.
That's the way I look at it. I just give them points for trying. Imagine if you had tried to make Super Mario Bros. into a live action movie and stay reasonably true to the source material. If I were a filmmaker and someone suggested that to me, I would have laughed in their face. Super Mario Bros. is possibly one of the cartooniest video games around. The only way I could ever imagine a movie working for that game is if it were animated.
There were one or two little things I liked. For example, I liked their depiction of Luigi. Also, it was pretty cool that they used a variation of their backstory that we remember from the DiC cartoon. I can't help but think of those guys as being from Brooklyn.