Yes he won by a penalty point, but Covington was deep on shots close to scoring two or three times from neutral. He had a reversal and said penalty point. Amu didn't really do anything the whole time but back up and his only points were off of escapes. I think he might have taken one shot the whole time and that was in desperation time at the end of the third.
I'm not one that thinks pushing people around the mat is really offense, but that's not really what was happening here. Based on that match, it's hard for me to see the result going the other way, but maybe Amu just had an uninspired outing.