Unless you're organising wolf vs dog pit fights that's not that important. LGDs have to be bonded to livestock first and foremost, attentive to them and alert and aware of their surroundings. Not prone to wandering etc. Just being there is enough to deter the vast majority of predation attempts, then being big and imposing with a good bark, and durable SHOULD a scuffle take place, these are the most important qualities in a livestock guarding dog. The ability to "kick a wolf's ass" is really way down the list, which is why the better LGDs aren't even the more formidable ones.