Adding to the Time War, by the end of it all Time Lords in the multiverse were dead, the Daleks had functional weapons, that they deployed, that erased galactic clusters from existence, and the Time Vortex itself was being damaged. The war was quite literally hell, across the multiverse.
Right, one species was wiped out cross-universes- or as it turned out, not really- galactic clusters were destroyed, and the time vortex was damaged.
Certainly big, but some are bigger.
In Marvel, the entire populations of most universes across the multiverse were destroyed, and a small fraction of the populations of a few were saved. The Beyonders were wiped out. All of the multiverse was reduced to a small mini-universe.
The Time War had universes being ripped apart at every point in their history and put back together again. And by the end the Time Lords and Daleks were merely the top dogs, as plenty of races/factions created by the War sprung up. One almost ate Davros, IIRC.
But this is all moot since only the Doctor and Davros remember all of it now. The Master left early and the Daleks have been seemingly mind-whammied since Caan was destroyed. The Time Lords destroying magic has had more repurcassions. I suppose you could argue that the Doctor is who he is because of the Time War, and we know that the Universe is still there because of the doctor, but...yeah, I think that's stretching it a bit.
Literally every good/evil conflict in existance, fiction and reality, is Gan duking it out with the Crimson King. Taken in context, that's a lot of fighting, since an atom on the lower levels of the Tower is a universe IIRC. Taken liberally, that's every conflict in every work of fiction ever. But even taking it in context, that is a LOT of fighting. The repercussions of which being that there are people willing to end EVERYTHING just to stop it.