I agree with this actually. Can’t speak for lee, but I’m personally comparing AAR to AAR. E.g. lightning AAR is without a doubt king, followed by fire and aether which are both very comparable.
I tried playing lee’s chaos AAR spec and could not hit the same timing as he did. You could attribute this to the differences in theorycrafting/piloting (i.e. I’ll theorycraft up a build I’m comfortable with), but I’m a pretty decent pilot. So that’s indicative of how much more behind chaos AAR is compared to other AAR damage types