yes but crisis core did not come out when the PSP was considered "Dead". Dissidia did well too, and that was last year. I consider the PSP somewhat dead for me, is because no games have come out that were interesting recently other than SE games or Sony Games.
But, It's ahead of IX and XII in combined sales 6 weeks in and it's already passed ffIx western sales. The PS3 nor Xbox 360 is near as dominant as the PS1 or PS2.
Also, I do not know the deals it had, such as if Sony paid SE to have exclusivity in Japan, or Microsoft Paying SE for the West, or If Microsoft paying for commercials. I do not know what is true, as I've heard people say that , but with no evidence.
It's impossible how much it would have sold on the PS3 were it exlusive. as there's nothing that's similar to compare to what it would have sold. Just like it's impossible
to say how much it would have sold were it Xbox360 exclusive. (As I have both consoles and would have bought it on that, I just bought the superior version.) Granted these numbers would suggest that would be a bad idea.
But if you're playing hypotheticals is another question. How much would it have sold if it were on wii? I dunno either, And I'm glad it wasn't on wii.