Elenarie: Enjoy your 720p 20fps shit.
Almost completely off-topic:
As an esteemer of "Good Old Games", I don't really mind playing in lower resolutions (though higher is alway better, of course), yet the low framerate is a big issue for me.
I really can't force myself to play something under 60FPS, it just feels terribly choppy and the stuttering quickly gets on my nerves (with all due exceptions, like older games -Desperados or the Infinity Engine Games, for example- where this is not very noticeable), sometimes even being physically nauseating. This might be only me, though; I have always been extremely sensitive to this, and I can almost recognize the number of frames with the naked-eye (hyperbole, but not far from the truth).
So, basically, I'd say:
if you surpass the minimum requirements, even if not by much, I would recommend to get it on PC. PC mater race crap aside, consoles will necessarily have lower resolutions, terrible framerate (all right, that is based on my perception of the average 30, yet as a former X360 owner I can state that in many games there have been many dives under that limit) and much worse textures, so I think that it would be hard to have a worse product on your computer than on a console. Just think about the comparison between TW2 on PC and Xbox 360: imo, even on the lowest settings, the PC won hands down.
Of course, when in doubt it would be better to wait until release and see how it actually runs on other people's machines before deciding.