I think the 3DS has the edge, but the system is still accounting for a lot more than the previous handhelds would be, like the GBA essentially just being a portable SNES with supposedly inferior sound, but I'm not even sure about that given Wario Land 4 arguably has more impressive sound than any SNES port the system had.
On a personal note, I still think it was lame that Mario Sunshine didn't get a port at launch. :P
Bet with Einsam_Delphin: http://gamrconnect.vgchartz.com/thread.php?id=172355&page=11