I remember decades ago playing D&D, we used to argue whether someone in armor could outrun an orc. The video above seems to have been created to dispel the notion that armored warriors were poorly mobile.
I found the video at Medievalists.net in an article that asked Could a Peasant defeat a Knight? Short answer: not really.
That argument applies to the 14th century, but the opposite occurred in the 1st century in the Teutoberg Forest, when German peasant forces used the unique topography of their homeland to entrap and slaughter Roman legions (see the next post).