The Huns were victors though, so the age old adage may need some updating
It all depends on your point of view. If you look over the last millennia, the Huns didn't leave a lot of legacy beyond finishing off the corpse of Western Roman Empire, which wasn't really an empire then anyway. Their culture was absorbed and we only know of them because of that.
End of the day, they were ultimately just another band of warlords.
Burning down the libraries in not something unheard of.
https://en.wikipedia.org/wiki/Battle_of_the_Catalaunian_Plai...