Marvel sorcery does not operate like that (back in the day, anyway, who the heck knows now?). Knowledge isn’t always power. Strange’s Crimson Bands are more powerful than Doom’s. Dormammu’s Crimson Bands are better than Strange’s. etc. A lot of it depends on the intrinsic ability of the user.
Whether or not this is some special magical ability the Dorm has, it demonstrates his level of power. Strange monkeys with time on a planetary basis, explodes planets to provide himself with propulsion, and casually deals with black hole. Furnace Face whups on him...outside of the Dark Dimension.
As another example of the gulf between them, an explicitly weakened Domammu produces Crimson Bands that massively outclass anything I’ve seen Strange whip up.
And he is capable of corrupting entire universes. Having to go through some lengthy thing to do it...it’s a universe. Odin is considered top tier for Skyfathers hereabouts, and he’s considered a dude who explodes galaxies. I suspect if he wanted to change the whole universe - something vastly larger than a galaxy - into something different, it might take him a little time, as well.
Mileage, it may vary. I’m just leery of using ‘not a skyfather’, the lack of a label, as being a reason for inferiority, rather than feats.