Pandora can do (and does) much, much higher quality 3D games than Nintendo DS. Not sure what you're talking about here. Or do you mean the CPU requirements for DraStic?
No, not at all, don't worry. I was thinking about which Handheld is better FOR emulation, not as emulation.
And I guess the Pandora can emulate other systems much better than an NDS (as far as Emulators exist for the NDS). On the other side, I believe that dedicated games can run better and faster on an NDS (or PS VITA) than onto an Pandora because the devs there usualy have accesss and documents to each corner of the Hardware, but this is just speculation and depends of each game.