Was the PSP a commercial success?
As of today, the still-strong 3DS has not outsold the PSP like it's predecessor's before it.
It's pretty clear to anyone who can see that the games on the PSP were all big Triple AAA games, it had massive third-party support, tons of awesome Final Fantasy games, Phantasy Star Portable, Monster Hunter, God of War, Assassin's Creed.
Tons of people wanted to take advantage of this awesome handheld and use it to it's full extent.
So, in your eyes, did the PSP do well enough to consider it a commercial success?