He sounds like a kid who's seen a lot of Apple keynotes. A lot of his tactics he takes right from Jobs, but for some reason his diction reminds me more of Scott Forstall, who's always a little more eager and a little more rehearsed than Jobs was on stage. (Jobs always took his time talking.) Not that this is a bad thing! When I was his age I was mimicking my favorite writers' styles, and teaching myself the comic pacings of my favorite comedians. That's how you first develop a sensibility, by studying the people you like.

He absolutely shows signs of nervousness – his movements are twitchy, he speaks too quickly and runs over his sentences. Clearly he spent a lot of time rehearsing what he had to say, and he does a good job of it. He gets the audience to laugh, though I'll be skeptical and suggest that audiences are predisposed to laugh at jokes made by young people, and also at jokes involving Justin Bieber getting whacked.

The reason I wouldn't call him great (though he is clearly good at this) is that he doesn't take his audience's perspective into account. I'd be stunned if he could; it's a damned difficult skill to have learned when you're a preteen. He takes (and sells) some effective cadences, but what he's actually saying fits awkwardly within the frame. He spends time explaining certain things unnecessarily, because from his younger perspective certain details are more interesting than they are when you're even a little bit older. Again, not surprising, and not a ding against him.

As for your Ray Allen quip, unfortunately I don't know basketball well enough to respond, but I argue that there's a difference between a basic action (like shooting a three-pointer) and a pattern (like constructing a speech in a certain way with certain rhythms). It would be like if a basketball player had a certain famous technique for making his way across the court once he had the ball. You could watch a younger player and notice that he was mimicking the tactics of certain players. Once again, not something to be held against a young person figuring out the rules of a game – that's one of the best ways to learn! But this kid is still sticking pretty rigorously to a template. It's a good template, and I think it's cute seeing a young kid mimic speakers with whom I'm quite familiar.

I just wouldn't call it great – because for me presentation is a nuanced art, and there's a lot more to it than what we're seeing here. Calling this great might close minds to the possibility of more sophisticated presentations, and that would be a real shame. It's nothing against this kid, who's clearly bright and having a lot of fun in the spotlight.