Welcome to Chess.com "Cheap Coward Cheater"

Today was my second day at Chess.com and many members have been warm and welcoming. I appreciate that. 

Sadly, when I played in a tournament today, one of the opponents that I beat let loose with a string of expletives and posted the message pictured above on my profile wall.

What motivated such an onslaught of verbal abuse? The following blitz game. I ran the game through the Chess.com computer analysis feature. Nice feature! Apparently, i made 14 innaccuracies; 8 mistakes and 1 blunder during the course of my 62 move Blitz game. 

From the analysis, my opponent made 7 mistakes and 4 blunders. Easy to do in Blitz. So why stoop to malicious comments like "Cheap Coward Cheater."

The definition of a cheater is "a person who acts dishonestly in order to gain an advantage." Now what dihonest act could I have done to make my opponent play 7 mistakes and 4 blunders? Yes, I gained an advantage; but not by any actions of my own. It was not I who won this game, but my opponent who lost.

The definition of the word "cheap" is "deserving of contempt." perhaps my opponent believes that I deserve contempt because his rating is 200 points higher than mine. It seems to me as though that was a "cheap" shot against me.

The definition of the word "coward" is "a person who lacks the courage to do or endure dangerous or unpleasant things." Undoubtedly it is an unpleasant thing indeed to congratulate an inferior opponent on his or her win. If my opponent lacks the courage and character to face his own loss; who is the real coward?