Right, eyewitness testimony is definitely known for its accuracy, especially when it comes to the way someone is walking at 100 yards away. I mean you can just count on it.
"Down where the Sasquatch hide
In the misty mountainside
He's got shiny diamonds that he's got to protect
Look into the Sasquatch eye
Then you'll know that sass can fly
Sasquatch is my daddy and he's going to protect me!"
- JB, Tenacious D
While this study is interesting it isn't that surprising. It's been the most plausible explanation for Bigfoot sightings for decades. A bear standing on it's hind legs does look fairly humanoid. Compound that with the likelihood that the animal is being obscured by foliage and the fact that the average person is terrible at accurately estimating size from a distance and it all makes sense.