There's a hell of a lot more to the camera than just the sensor.
Ignore the 5DIII's sensor for a moment, and you've got a camera that, except for framerate, beats virtually every prior camera Canon had ever made on pretty much every spec -- and, similarly, save for framerate, beats virtually everything else the competition had made, to boot. And, at 6 FPS, it's hardly a slowpoke.
Now, add on to that that the sensor is the highest-resolution sensor Canon has made and is within 1/2 - 1 stop of the performance of their just-released flagship model...and remind me again why everybody is bitching that the 5DIII's sensor is "only" a significant-but-incremental improvement over the 5DII's already amazing sensor?
As to the question of the poll...well, it depends on what kind of a camera it is. If it's got the 5DIII's sensor, then we know the "film" is awesome...but what good would that do me if the camera itself is a piece of S___?
For the record, I fully expect any new full-frame camera from Canon will be of comparable value to the rest of their lineup. It'll be a fine camera, of that there's no doubt. It'll be more expensive than if there were no duopoly, but it'll still be reasonably priced for what it is.
And the fanbois will still scream incoherent bloody murder at something-or-other.