I don't think this is accurate. According to trusty wikipedia, Cougars have killed a whole 20 people from 1890 to 2011 in North America. Just looking at what wikipedia lists for North American wolf attacks, the number is at least similar, although several kills listed includes wolves being raised as pets, which probably merits a darwin award exclusion.
You aren't going to get killed by either, and I'd much rather be confronted by a solitary cougar than a wolf pack.
I have a Colbert-style opinion of bears. Compared to the wolves and cougars, they kill a lot more people and don't automatically get scared away from people.
Dude...you go from DEATHS from mtn lions in North America, to wolf ATTACKS. Most wolf attacks come from people feeding wolves, and fatalities have been virtually nonexistent (though in Canada and Alaska, there have been a couple that looked like they were predatory attacks by truly wild wolves).
Yes, both are not big dangers to the public. But, wolves are much less likely to attack humans. In areas with lots of mountain lions, individual lions have been observed stalking humans, and are not always automatically scared away by people (or by dogs, which though they probably don't taste as good as deer, are a ready food source.)
Subjectively, the fact that they are animals that will occasionally do things like stalk people seen through deck doors or picture windows does give a little wow factor. In the lower 48, wolves don't seem to do that, at least yet.
They're neat animals, and despite the considerable cost of each lion in terms of effect on deer herds and some bird species, and attacks on pets, I definitely do like having them around. Probably in part because of the fact that they are a bit spooky. I also am conscious of the fact that, along with ticks being more dangerous, things like snakes are more dangerous to my dog as well, and I think rattlers are cool, also.