Am I the only one who thinks this question is delusional? All of one game has ever topped 1m in Japan on the PS3 and people expect a port to do that well? Really? I don't believe the PS3 can handle games that actually sell a decent amount. I mean, even the mighty Final Fantasy - the franchise which topped 1m for the PS3 - had pretty messed up numbers for its franchise on the console.
If MH3 game had sold under 500k on Wii, then it'd be possible, even likely, but I don't think there's any hope whatsoever of MHP3 pulling this off.
'Course, MH has been defying expectations so I suppose this is possible...
“These are my principles; if you don’t like them, I have others.” – Groucho Marx