It's just that Warhammer has strange things regarding power level. For example, there are Daemon feats that in the Warp created supernovas and made stars, one would think that because they are in the Warp they do so not count but in fact the traitor Primarchs and his legions live in the Warp and the Primarchs Daemon are the most powerful Daemons, but also Abbadon who is not a Daemon, he has defeated powerful Daemons in the Warp and is currently considered as strong as a normal Primarch. But then we have that a nuke can severely damage a Primarch, which although that nukes are much more powerful nukes than the real ones, but they are not planet destroyers because other types of bombs are used to destroy planets. There is the birth of the Red Angel (not to be confused with Angron who also has that nickname) too who burned the surface of a planet, came out of it, covered space and almost caused a star to go into a supernova, Sanguinius blocked that flame with his wings. But then...