When you say "the DS/PSP Phantasy Star games" I don't even specifically know which games you're talking about - when people think Phantasy Star normally either the Genesis games or Phantasy Star Online are what come to mind. The latter is what the DS/PSP games are going to be affiliated with unless they're ports of the Genesis RPGs.
I don't even know how many Phantasy Star games are on the DS. There's like... Phantasy Star Zero? That game was all right. I don't really know the PSP ones at all.