I love to race on my commute but I don't act obnoxious towards other riders. Most people don't want to race and so I pass them and there is no issue. But I do enjoy it when I meet someone who wants to compete and actually has some legs to back it up. Its fun and makes my ride in more interesting. The problem with the individual you ran across is that he has no class. Everyone with an ounce of class knows that the most satisfying victory is one concluded graciously.

Except if you are racing a car then feel free to be obnoxious.