>>13183817Oh child, if they could block it, they would have already. I don't know if you're aware of this, but nintendo wfc is what all the online trades and battles go through and unless the pokemon have illegal moves, EVs or abilities then they don't get filtered. The fact is that they just have no clue on how to detect it.
They'll probably put an anti cheating measure into the new gen... but as for the old gen... they're completely fucked because the pokemon are identical in every way to anything legit.