I think developers need to smarten up a bit. Call of Duty 4, Assassins Creed, Ninja Gaiden, Lord of the Rings, etc. on DS but no PSP version? Those games are directly in line with the PSP userbase, and aren't even selling good on the DS.
I will tell you this, EA is one of the only companies that continuously make a PSP port, and it pays off for them.







