Hear Hear!
I'm sure that it'll sell very well. Regardless of annoying and ignorant pirates, there are a number of noted reasons why it will sell very well.
1:The Hype that has been built up for 3+ years.
2:The fact that it is an International release, which will have higher sales figures because it will be spread further.
3:The fact that you need to buy it to get cool preorder bonuses, which most people want.
4:The fact that Piracy is illegal in many places, which will keep anyone worth their salt away from such copies.
And those are the main reasons I can think of. The only reason that sales might not be so good is because there are fewer people who own PSPs than DSes....but I'm sure a number of people own both systems, so that's not much of a problem.