By chance I saw that news conference live, from the start to near the end, when I got bored and changed channels. My impression was that he was sharp, even impressive, in the answers he gave, around 80% of the time.
Trump comes across as very confident all of the time. He has great stage presence, and he seems to enjoy being at the centre of it all, even in the adversarial environment of a press conference.
One thing that a lot of politicians do that really irritates me, is that they don’t make any real attempt to answer a question; they just make a statement of their own choosing. I thought Trump’s answers were as responsive to the questions as you would get from a typical politician.
Trump can’t seem to speak for too long a period, before letting out some ridiculous hyperbole or saying something he shouldn’t or doesn’t make sense. Eg Coded Logic’s quote above. I don’t understand how he gets away with it. I guess it is his unflinching confident demeanour.
Overall, I think Trump’s minders would have been happy with his performance, and everyone else’s opinion will be influenced by what they think of him.