The 3DS sales haven't been poor. Currently the handheld looks to out pace the first year sales of DS. The thing is regularly the top selling hardware in Japan since the price drop. Nintendo simply didn't push hard enough with the 3DS to maintain momentum at its previous price, but the DS suffered similar handling. Monster Hunter is a Japanese focused franchise. This is why I stated that the only way Wii U would get a Monster Hunter release is if the Wii U sells well in Japan. So much of the Japanese market is handhelds thus why this franchise with most of its focus in Japan has for the most part stuck with handhelds this gen. Monster Hunter for the 3DS is a natural fit for the Japanese Market. Monster Hunter for Wii U not so much. We'll have to see if the new controller helps the console create a market significant enough to warrant Capcom making a Monster Hunter game for the console.
Monster Hunter originally went to the Wii because of the franchise's Japanese market focus. There simply wasn't enough of an audience for the franchise to warrant HD developing costs because primarily the Japanese console market is too small to warrant that sort of investment. Wii U is going to have to over come that issue if Monster Hunter is ever going to grace its library. The touchscreen controller may very well help the console in that regard.
 Well actually I think its the opposite. It wont depend on how much the console sell. I think Nintendo has enough money to conclude an exclusivity contract with Capcom to make the Wii U sell well in Japan. So Nintendo would kind of advertize its Wii U with its excusive Monster Hunter. I agree though with the fact that everything would be settled in Japan first, since its a Japan focused series.
How come Monster Hunter isnt popular outside Japan??????? I just cant understand...