In addition to that he was out of shape. He stopped before he could master it :
either my gym trains 10 times harder than his or he stopped real early. i train in krav at my gym as well as other martial arts and the people that i see in the beginner class could beat him. in better shape know basic sweeps head control know how to sprawl can fight off their back with kicks before getting up and know clinch work.
anyway krav wont make you an mma champ but it is a great form of self defense.
"The fat man flies at midnight"