It was a good speech, and very much expressed the positions he's previously articulated. I wish he was like this all the time.
He stuck to the script, and he sounded eloquent. That's good. His strong point isn't language. It's showmanship and, yes, even his bombastic style.
Do we agree that when he veers off when he gets shaky? Not necessarily with the concepts and ideas he wants to express, but with how he expresses them. He's witty and he thinks on his feet, but his vocabulary and command of the English language are not the best, so off-script he ends up using this simplistic language, full of repetitive sentence structures and somewhat disjointed sentences.