I'm not a scientist, but I tend to agree with you here. I can't imagine any human that could keep up with a wolf trotting along all day.
Humans are distance runners, not sprinters. As such they can run almost any quadruped on the planet quite literally into the ground. The article doesn't mention the major reason for this, which is that the human ability to shed body heat is one of the most efficient of any animal.
The Bushmen and other "primitive" hunters routinely run down antelopes and other speedy animals simply by continuing to track the animal and not allow them to rest and cool down. The result is that the animal eventually drops due to heat stress, essentially cooking itself from the inside out. The Bushman trots up, puts a poison arrow in from a safe distance and waits for the animal to die, or anyway get weak enough that butchering can safely begin.
What a specious theory this is...if evolution were to be as true as it's advocates would have us believe, then we have to bifurcate our logic and believe both:
That we don't have the strength, agility, and speed of apes because we evolved our minds to the point that we don't need those attributes any more; or
That we have evolved to be a speedy, running kind of being because of the shape of our buttocks, among other things.
The great part of being an evolutionist is that you are allowed by the complicit community of scientists, and the media, to posit whatsoever you choose, and it'll never be challenged, as long as you have Ph.D. at the end of your name.
No wonder Hitler was able to get away with Social Darwinism to the degree he did. We practise it today, too, but we're subtle enough not to admit it.
Turtles are quadrupeds, and I'm pretty sure I can outrun the average turtle.
There are some other quadrupeds, such as sloths, that are a lot slower than we are.