And Link can be harmed by sword slashes by common enemies. Again, it simulates a super nova and its fiction. So if he can take, he can take it. Along with other attacks like Diamond laser and the other ones.
Gameplay < Canon. You're trying to use gameplay. Don't bother. Cloud in canon could never survive such attacks if they were as powerful as you claim, because he can be hurt by something as comparitively weak as a bullet. 😐
Take for instance AC, which is essentially one long cutscene illustrating the limits of the powers of it's characters.
Conversely, Ganon has a cutscene of being slashed in the face several times by an individual many orders of magnitude stronger than Cloud, with what amounts to Ganondorf's kryptonite.
Yes Supernova IS as strong as an exploding star, says so in the book it simulates the power of one. It only doesn't kill you IN THE GAME because of gameplay mechanics, which aren't even in play here.
If this is the case why bother summoning a meteor? /eyeroll. It's clearly a hyperbolic statement, and one that makes no sense in the context of the FF7 universe and what we know the characters are capable of.