The cosmologies are difficult to compare because “power” in middle earth is just kinda … power. Sauron doesn’t need to have a “chain lightning lvl 10, 100.000 damage per second” ability. He can just … exist, and all the evil (or just lesser willed) creatures around will just fully accept him as their leader and do whatever he says. It a cosmic force or aura that is never quantified in any way. Same with ganfalf. He does very little magic. His power is also mostly in his presence that compels the good guys to do good things.
The cosmologies are difficult to compare because “power” in middle earth is just kinda … power. Sauron doesn’t need to have a “chain lightning lvl 10, 100.000 damage per second” ability. He can just … exist, and all the evil (or just lesser willed) creatures around will just fully accept him as their leader and do whatever he says. It a cosmic force or aura that is never quantified in any way. Same with ganfalf. He does very little magic. His power is also mostly in his presence that compels the good guys to do good things.