For a given value of 'best'. In theory, as you say, being the 'best' will likely entail hard work and genetics, but they should also be ethical; examples to us all as to what we can achieve. The reality is closer to what you say, though - although I doubt it's only steroids that they use to enhance performance.
Then again, we might just be comparing apples to oranges here since it's probably a lot harder to cheat (and not get caught) in a gaming tournament, where actual money is on the line, than it is in an athletics competition.