Funny you should bring up Monster Hunter, considering the PSP versions sold it at triple the amount.
All of what you named were incredibly popular games in Japan, however none of them are ports. And for the install bases that they have, they really didn't sell up to expectations. At all. There's not just some huge fanbase in Japan sitting on their hands hoping for this port to happen. They are not like the American fanbase, where all we really have is hope. They just go out and buy it.