I don't really have much to say after reading that. My thought process is pretty much summed up like this: "But Dumbledore can't beat Voldemort!" "Maybe he can. In canon he can (kinda), and even in the last few chapters QQ has given him some grudging respect," "Seriously? Voldemort was winning the Wizarding War, whilst holding back!" "Dumbledore might have been as well. Anyway, we've only got Voldemort's word on this. Also, check to see what parts of ch 108 were in Parseltongue. Maybe there's a better reason for why Voldemort didn't win in three days."

So, I guess I'm going to go check this now. Otherwise, bye-bye Albus. EDIT: there is no Parseltongue used in that particular dialogue. Quirrell claims that he didn't want to go back to Solitaire, but it is possible that he just ran up against Dumbledore in earnest.