The low WiiU sales are evidence enough most people who like this game have already bought the console. It's sad, but Japan is fast losing relevance as a big gaming market, not talking about mobile since that's not for us. Sony and Microsoft did good by not concentrating on Japan too much as there's less and less to be had there. Nintendo is impacted by this the most as their presence in the west is shrinking and nothing they have has been succesful in reversing that so far.