>>20535002By cheating, he puts in less effort than others to get the same results as his opponents. You can say the same thing for professional sports - If the winner of a cycling tournament was later found out to have used EPO, they'd take away his title as well.
Cheating is cheating, I'm for a zero tolerance policy here, since it's a slippery slope - Allow one cheated Pokémon in, and others will try similar and worse things because they can tell that the safeguards are lax.
Besides, this is a tournament with cash prizes. How would you like to get jewed out of your hard-earned money by someone who doesn't even play the game?