You want RPGs and you bought an Xbox? Lol.
FFXI, FFXIII, FFXIII-2, FFXIII-Lightning Returns, Lost Odyssey, Eternal Sonata, The Witcher 2, MagnaCarta 2, Fable II and III, Blue Dragon, Resonance of Fate, Culdcept Saga, Diablo III, Oblivion, Skyrim, Mass Effect 1-3, Dragon Age 1-2, etc. not enough for you? A lot of those are also exclusive. And that's before diving into the Arcade and stellar indie RPG's.
That was a pretty ignorant comment. They may not be the majority of titles or what the majority of people are playing, but they exist and are not hard to find at all.
Granted, there isn't much for the One right now as far as RPG's go, but the Witcher 3 will be available for it in the near future, as well as the next ME and DA entries. There will be plenty of options for RPG fans on the One.