Griffin: Peter is just starting to master some of his own powers by the time that Miles winds up getting his powers, so Peter suddenly has to take on the role of a mentor, but its a comedy of errors, because Peters suddenly put in a position of having to be the guide to someone when he has not yet mastered his own [powers].
I think they kind of represent two sides of a hero. Peter is much more the rational, practical thinker; and Miles represents the other side of the situation, which is impulsive. Running into a building, not thinking about the consequences. Thats how we play them. We get to see both sides of what it means, and the impulse that anyone would have when they get powers I can fly, Im just going to fly everywhere when you dont take other things into consideration, or you just race in without thinking. Peters the thinking side of the equation.
And I think they both have to learn something from each other over the course of the series. Peter has to learn to drop his guard, Peter has to learn to open up. Miles is willing to tell anybody that he has powers. Peter has to learn that sometimes keeping a secret may not be the best thing in the world, and Miles has to learn responsibility and tempering his brash nature from Peter. Its again showing the duality of a hero.