yea like i sad, nobody in denver knows mannings health, only the coaches and manning.
The foot injury he had is supposed to last alot longer, but if you tear it completely, it helps or something, so maybe he teared it completely to be able to play.
I was watching Mannings practice when he came back last week, and he could still not fully go down on his right foot to plant before he throws. So i think the injury is still a concern, unless that has changed since a week ago.
I would chose a 60% healthy manning over Brock though. If it is his offense he is running, not kubiaks.