There's a difference between everyone gets a trophy and this. I don't know about you but my coaches taught me that part of sportsmanship was allowing people to lose with dignity when you were against a much weaker opponent. Running up the score is classless, especially at the youth level where you have much wider differences in ability between competitors. It's about respecting others, and acting in a respectable manner.
While we are talking throwing around terms like "everyone gets a trophy", I'll submit that the opposing coach and players are examples of the "all about me, **** you, got mine" mentality leads to things like Enron.