It occurs to me that everyone saying that Trump did okay last night might just be giving him props for not starting out acting bat shit crazy and escalating from there. As in, he gets points for behaving like a human being is expected to behave in such a situation.
Sure, if you can articulate your side of an argument in a clear and concise manner, that's debating. Win or lose your position, playing it by the rules is a good thing. He may have pulled that off for a while - a lot longer than in previous debates.
But let's not look past the content of that side of the argument. Good debating doesn't mean there are good ideas behind the argument. And, in my opinion, even if he had the greatest idea in history and a solid plan to back it up, I'd ave a hard time trusting him.
I think he just wants to win at politics but has no idea how win at governing.