Here are the lists of all the current and upcoming RPG's on both systems....
Xbox 360-
oblivion
mass effect
eternal sonata
blue dragon
Lost Odyssey
Fable 2
Too Human
Final Fantasy XIII
Fallout 3
Marvel:UA 2
Borderlands
Alpha Protocol
Rise of the Argonauts
Last Remnant
Two Worlds
Enchanted Arms
Infinite Undiscovery
Kingdom Under Fire
Dark Messiah
Age of Conan
Tales of Vesperia
Star Ocean 4
Cry On
Spectral Force
Phantasy Star Universe
Operation Darkness
Spectral Force 3
Kingdom Under Fire II
Zoids Assault
FFXI
PS3-
oblivion
Folklore
eternal sonata
Disgaea 3
Valyria Chronicles
White Knight Chronicles
Final Fantasy XIII
Fallout 3
Final Fantasy Versus XIII
Marvel:UA 2
Borderlands
Alpha Protocol
Untold Legends:Dark Kingdom
Rise of the Argonauts
Last Remnant
Two Worlds
DC Universe Online
The Agency
Enchanted Arms
Tales Game (Untitled)
Angel Love Online
Tears to Tiara
Free Realms
Cross Edge
Kingdom Under Fire II
Which system's RPG line up are you most excited for?
Edited, again.....
Greatness Awaits
PSN:Forevercloud (looking for Soul Sacrifice Partners!!!)