Obsidian has only had what 3 titles on Xbox360? Alpha Protocol, Fallout New Vegas, and Dungeon Siege 3. All of which were on PC but only one (FNV) had decent PC controls and probably only because Bethesda had already established the control scheme in Fallout 3. The other two work a heck of a lot better if you attach a gamepad.
If we look at Obsidian's history the only games they made for PC with decent controls are all games that are based on another developer's design: FNV, Neverwinter Night 2, SWKotOR 2. Yet Dungeon Siege 3, the follow-up to Gas Powered Games' Dungeon Siege series, had completely fudged up controls for mouse+KB because they were tasked by the publisher to completely change the game and to make sure it would work for consoles as well.
I haven't had faith in Obsidian since NWN2, they seem to always find a way to fudge things up. Meanwhile, in Poland, a little known studio, CDProjekt RED, went ahead and made The Witcher with a modded Aurora engine (NWN1 engine) and it looked shockingly superior to NWN2 and performed infinitely better on the hardware of the time.
A little hope glimmered when they announced Alpha Protocol (which suspiciously looked a lot like Mass Effect, graphically, especially the dialogue sequences) but they shattered that fairly quickly when I played the game. The one thing they did get right was the dialogue and choices, they really shined there, but it's not much of a game if that's all it's got going for it and everything else was unbearable.