But, that is where you are wrong. Sablelock can LOCK anything and WIN its autolosses, Luxchomp can't do that very well. The only reason Luxchomp has any prevalence in this format right now is because of Gyarados. Luxchomp can hit for weakness and Gyarados completely kills any chance of Donphan running rampant....Sablelock doesn't have that fear. I understand you are using sarcasm, but you used it wrong. IF Mismagius/Bibarel won, it would be a viable deck. If you care, Arceus had the "best" performance at Cities, winning 3 of 6 top 4 appearances. Now, I don't think that makes it BDIF, but it DOES show that the deck has tons of potential that, obviously, no one is looking into. The difference between the Sablelock numbers and the Arceus numbers is that Sablelock has ALREADY proved that it is a top contender deck. The numbers only reaffirm what we ALREADY know.
The difference between my argument and yours is that yours is an opinion while mine uses facts supported by metagame analysis. You are entitled to your opinion, so I'm not going to sit here and argue with you about which YOU THINK is better, I already know the answer. But, I will gladly shoot the breeze with you about why you think Luxchomp has better matchups if you have anyway to support your argument. If not, I'm just talking to myself. To be honest, I play steelix...I LOVE a meta full of Luxchomp. I would love nothing more than to walk into states and see over half of the field running Luxchomp...I have nothing to gain by sitting here trying to convince people to make the switch, but stats don't lie and neither does the meta. Vilegar is played as a counter to SP. Sablelock has a much better match up to Vilegar than Luxchomp does. If, at states, every Luxchomp player dropped lux and picked up Sablelock and every sablelock player dropped sablelock and picked up lux and the meta didn't have the ability to shift, Sablelock would, without a doubt, EASILY be BDIF by pure numbers. Being as that is the case, Sablelock is a better play in the current meta. Now, if that DID happen in the first week of states, the meta would shift: less vilegar and more decks to counter Sablelock would appear in the second week of states, THEN Luxchomp would be a better play. But, we can only play in the meta we are given, and in THIS meta (cumulative US meta), Sablelock is a better play.