Are evil wizards more poweful that non-evil wizards?

[tensai_oni]

There is no "light side" of the Force. There is the Force and the unbalanced Dark Side.

Balance and the Force dominating are one and the same. Balance between "light" and "dark" sides of the Force is fanon.

At least that's how things used to be because post-Disney, what is canon and what isn't became muddled.

EDIT:

On point. Technically, evil and non-evil wizards have the same potential for power. However evil wizards have fewer taboos they are unwilling to break in pursue of power, and because of that they have more opportunities to grow powerful by for example sacrificing innocents or their soul to demons or whatever.