What if: wizards and muggles war

Let's say 6 months after Voldemort's death, muggles strike back and manage to nuke a stadium during the Quidditch World Cup(saw this in a fanfic😂), tens of thousands of witches and wizards from all around the world vaporized, every muggle nations decides to go to war to exterminate wizardkind, who would win?

Many would say muggles but I don't think it would be that easy