NahA real full grown wolf is about 3-4x the size of a large pitbull, and can get up to 40 lbs heavier and 2 feet longer than the biggest hyenas.
wolves and mountain lions exist in same eco system and 9 out of 10 times wolves already kill mountain lions.
im positive most posters here are confusing wolves for coyotes or smaller wolf species.
true big grey wolves are massive. Near same size of mountain lions (although mountain lions can get bigger depending on where located but world wide average wolves are about the same).
Wolves are considered incredibly smart though compared to all 3 which is why they routinely already kill mountain lions.
Im in actual disbelief of the poll results.
https://www.quora.com/Do-pumas-kill-wolves
Only chance wolves have against mountain lions is if theyre in a pack. One on one, the wolf is food.

shyt, common housecats are lightning quick vicious, let alone an almost 200 lb frame of explosive lean mass killing machine. As mentioned several times over, Wolves and Hyenas cannot efficiently function without a pack, and arent built for one on one confrontations with anything that can hold its own. In the wild, more often than not theyll run from a fight without the pack. Only time theyre killing big cats is with a pack and they stalk it down, wear it out and eventually overwhelm. They arent doing this shyt one on one, in a cage. That mountain lion is making short work of everything in there because they try to kill as quickly as possible. Biting spines left and right.
I've said this once or twice before if we are talking logically the wolf, hyena and mountain lion aren't bred to fight, do they have the better mechanics sure but given the opportunity because of evolution they fight to mate, eat or if cornered to defend themselves (but will run to live another day) , they do not fight for "fun" like pitbulls do. 
