Oh, i'm sorry, i didnt knew you had a crystal ball, nevermind the fact that speculating is exactly what we should be doing here. Yes it was, it was the butt of all the jokes you can think of. One one hand you had dragonite easily getting to even +2 and salamence having the possibility of steamrolling with moxie while haxorus was just there as ''the thing that ohkos rotom without outrage''. My point is that theres no reason to assume anything is going to be overpowering in a nonexistant tier. Battles are far more than theorymon. If the tier end up being prepared for a threat due to the high usage of its checks it inst going to be overpowering anything, period. One thing is speculating about whether something will end up in the usage stats (and therefore tiers), which is exactly what this thread is supposed to be, and the other is trying to make a point about something being too much for a tier to handle when no one knows for sure what kind of metagame we are talking about.
		
		
	 
We have a pretty good idea of what can handle Haxorus right now. And while we're speculating, I can also speculate that Skarmory will drop to UU. It probably won't anytime soon, but such is speculation, right? [/sarcasm]
We have a decent picture of the lower tiers--we at least know what 
won't be in them. The lower tiers will not have anything like Genesect, Kyurem-B, or Latios. It's just not happening. Stuff that can handle Haxorus very well, such as Skarmory, are not going to fall to UU. Hippowdon, sure. But it's not switching into a potentially Banded Haxorus, as CB Outrage will 2HKO it, before SR even. Stuff that can potentially revenge it at +1 include Scarfed Latios, Terrakion, Starmie, Salamence, Hydreigon, Gengar, Jirachi, and the rarer Scarfed Greninja or Noivern. Those that might conceivably fall into UU of that list are Salamence, Hydreigon, Jirachi, and Noivern. The former three can revenge, but Jirachi pretty much loses, and we don't know for sure they will fall. We sure hope they will, but we don't know.
Haxorus can also handle a surprising amount of revenge killers, as I showed above. I wasn't even aware that it could take Flygon's Dragon Claw. You are going to need SE attacks or REALLY powerful attackers (as in: REALLY powerful) to take it down, since it has to be holding a Scarf to revenge Haxorus.
What we know:
-Skarmory is the only thing that can hard wall Haxorus, and it probably won't be UU this gen.
-Scarf Flygon is the only thing from last gen's UU that can revenge kill a full health Haxorus.
-Potential drops that can revenge kill are: Salamence, Hydreigon, Noivern, Froslass.
The bottom line is, Haxorus is stupidly powerful. You can't wall it, and it takes a lot out of a lower tier to revenge kill it. Also, most of the mons that can "definitely" revenge it are Dragon-types themselves. Noivern doesn't like using Scarf, and Froslass uses Sash instead, and is a lead. Not to mention, Dragon Dance isn't the only thing it could do.
Also late last gen, it was immediately more destructive than Salamence after one boost, and it could still Swords Dance.