More like the latter. In my view a high quality developer is not one that pushes out code fast. Not that they are slow, but what distinguishes them primarily is

More like the latter. In my view a high quality developer is not one that pushes out code fast. Not that they are slow, but what distinguishes them primarily is their ability to deliver higher quality software, software that is well architected, robust, performant, etc. It is like the difference between average chess players and grandmasters. Grandmasters do not necessarily think any faster than regular players; they think better. For example, they are better able to prune out useless lines of analysis, thus making more efficient use of their cognitive resources