While I can definitely say the game is innovative, I can agree with him that he had some definite limitations and obviously cut some stuff from the game over its development. It really shows as there's lots of areas in the game where content seems rushed, missing or even just mismatched to the previous scenes/areas. And while I liked the game a lot, it also had SEVERE pacing and difficulty issues. In all ways, it felt like a game which probably had either a rushed schedule, major budget constraints, or both.
Even with all this though, I still don't think it deserved to sell as poorly as it did. Its still one of the most unique titles the Wii has seen...if not one of the most unique any console has seen in the last 10 years. And like he said, he was trying his best to make a product to match the quality and fun factor of a Nintendo product. Perhaps if he had more time and a bigger budget, he could have.
Six upcoming games you should look into:
