I don't believe this has been asked before. I was wondering:
Since Pokemon that were bred before gen 6 can't be used in online wi-fi battles (in the actual gen 6 games), why are Pokemon like Softboiled Clefable allowed in Smogon's rules for online battle simulators? It's not broken enough for a suspect test; I'm more concerned about the technical aspect. Since Softboiled is unusable on Clefable in online wi-fi battles, shouldn't people be forced to run Moonlight on Clefable? Similar to how wi-fi battles also prevent the use of badly hacked stats on Pokemon.
Applies to other Pokemon too, but Clefable is the most relevant one.
Edit: I think it is legal for local battles, so if that's what determines legality, then it's okay. But I think hacked stats on Pokemon (like 252 EVs across the board) are also allowed in local battles.