Maybe I'm a good teacher because I'm a mediocre developer?

I mean, people are bad-to-mediocre when they begin to learn something per definition, so when I teach them, I teach them from their perspective? :D

I actually would see teaching as the longer term project without the small wins you can expect in programming.

When you end a lesson, you win. Always. There are very few ways to lose at a teaching moments if you are good at it.

I can code for several days before having something that will make someone smile.

As the child of two teachers I vehemently disagree with what I consider your inaccurate and wholly unsupported supposition.

Except i'm a dev and a teacher.

And i have yet to met a teacher who's anywhere close to have the deadline challenge a dev has.

Somebody not learning is a failure but that's life. A line of code not working on time, well, that's the entire product not shipping.