The PSP barely has piracy issues. Most PSPs have firmware set so you can't play pirated games, and there exist no pc emulators for the device. This is just sony blowing things far out of proportion to overprotect their intellectual property.
The DS OTOH may have legit piracy issues, but those games sell because more people have DS'.
The DS OTOH may have legit piracy issues, but those games sell because more people have DS'.