makes perfect sense based on your definition of what magic is. fate/stay night for example doesn't bother splitting anything and puts everything supernatural under the umbrella of 'magic.' you mind control someone? magic does it, and magic resistance is needed to counter it. which is gained by being a good mage. willpower's a given of course since hey, it's the mind. a simple mind sucks, a complicated mind helps. umineko defined magic as pretty much EVERYTHING that a person couldn't do. >_>; a billion rpgs run status effects as magic, even if they attack a person's mind. SMT pretty much covers the similar all umbrella, though has some weirder stuff as you go higher. either way, psi doesn't exist, but you'll find some psi-like effects. still is magic to it. hell, while it doesn't really fit into either one, star wars does the exact same thing except bundles it as just 'the force,' without really splitting too much from what other series would most definitely categorize as magic, psi, or mix both up. Negima splits ki and magic up, and magic shows many psi-like effects. yet it's all magic there. and of course, you resist it by being that damn good. some series shade it up in magic being able to do pretty much the same thing as psychics and much, much more, though this tends to make it look like psychics just plain fit a more specialized field (see: marvel and dc for how this works, and usually the same defenses work for both because it's all mental defenses).
these are not how you think. which is, again, fine. but absolutely nothing there is wrong. far as i'm concerned, if your series shows magic as affecting the mind, and does not offer any distinctions or notable references to other supernatural powers, then it all fits under magic because that's how it defines magic in its universe. seeing how no other definition of magic exists for ganon except that you can have the most bizarre act considered magic, then hey - it's all magic to him. and it's all magic to me.
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The future must protect the clone's past.
"Maybe it's a tentacle, molesting the planet itself. - Aschen Brodel.