"alright, so you know how a lot of fantasy has just a bunch of random magic that make's no sense? well the magic in this feels like you're getting a physics lesson. theres actual rules and an insane amount of creativity in it.
The one thing Sanderson excels in is setup and payoff. the first half of his books can be a little slow, but man when you get to the end, you physically cannot stop reading. there are things in books that have boon foreshadowed in previous books from literally a decade ago. and when the payoff hits, it feels Incredible"
that's probably how I'd try to explain it.