Contest? What competition?
At best I get top 50% or 25%. If I spent my carefully husbanded resources I would win some prize not equivalent to what I spent.
This contest, 1 hero I have, but not strong enough to fight. The other 2, I do not have at all.
As there is no handicapping, contests make the strong players stronger and lure weaker players to use their resources in a non optimal manner.