A wolf is better equipped in almost all cases than a dog even than dogs larger than itself.  They have larger canines, stronger bites, and pound per pound they are just stronger. Even the biggest flock guards don’t take on a wolf alone that’s why a shepherd usually has more than one if not 5. I have watched a show about a dog Argentino protecting it’s child from a Puma and killed it. So there are some beastly dogs out there.