It's all arguments that have been made for years on end. But the conclusion seems to logically be that it's nearly impossible to try to balance output of high-level kits to low-levels.

Kinda like, the difference between "average" and "good" is very small in early content, when players have few skills. The more skills you have, the wider that gap may become. Where do you slide that scale to keep the balance? Too low, and "good" high level players make everyone else feel useless. Too high, and the "average" high level player is barely contributing.

It's not all about potencies and numbers.