People might be using the wrong move against it, then:
You forgot Intimidate in that calc.
Play Rough is basically a Fairy-type Aqua Tail, both of which Qwilfish resist anyway so yeah.
A few Attack EVs may be necessary to inch it to a OHKO after Belly Drum + Leftovers (though SR secures the KO), but Qwilfish can definitely respond to Azu appropriately. Azu has no chance if it does not Belly Drum on the switch.
Totally forgot about Intimidate. Still, at +5 Play Rough still has a 56.25% chance to OHKO after Stealth Rock, and Azu can Aqua Jet after that. Haze will destroy its momentum, though.
Gale Wings Acrobatics + Flying Gem might work. I'm considering a scenario where Azu will be at 75% here, and with just enough EVs to outspeed Scizor's Bullet Punch. Eh, that's the build I posted, anyways. ^_^'
That actually doesn't work. If Qwilfish switches in ON Belly Drum, Azumarill still gets its +6. Remember, Belly Drum is a +12 boosting move (it maximizes attack, even if it were at -6). So Qwilfish has to switch in on the revenge. Or the Aqua Jet, but I need to get going so I can't confirm if Aqua Jet brings Qwilfish into Play Rough KO range if both are at +5.
Only if it moves faster than Azu.
Qwilfish's base 85 Speed vs. Azumarill's base 50 Speed. It only needs 52 EVs to outspeed ANY Azumarill, but in reality it doesn't need any because Azumarill will never be seen running Jolly
True, but the regular Qwilfish doesn't run any Speed EVs, does it? I think Azumarill can prepare for that, though a specific counter can certainly be engineered (and seeing Azu's usage numbers, it's a given). But it's as I said before: BellyJet Azumarill is all about timing. It is a risky strategy, after all.
But it HAS to switch on the Belly Drum. Granted, it's not that difficult, and while it can be said about almost any other set-up sweeper, Azumarill must not get a completely free turn to Belly Drum because all its potential counters are turned into rather shaky checks (Two +5 Aqua Jets can deal about 80% to Qwilfish. Add SR and some residual damage and say goodbye)
Qwil def. checks Azumarill since most of the Azumarills I've faced have Waterfall/Play Rough/Aqua Jet and Superpower, all of which Qwilfish resists. It doesn't resist Double Edge but I've never seen one with it yet. With Intimidate, Qwilfish for me is just to scare Azumarill and soften the blows for the rest of my team. THe super effective moves help but I use it mostly hinder its onslaught lol.
Unaware does not ignore Huge Power, because it does not involve stat stages
+6 252+ Atk Huge Power Azumarill Waterfall vs. 252 HP / 252+ Def Mega-Charizard Y in sun: 534-630 (148.33 - 175%) -- guaranteed OHKO
Basically, don't switch into it, ESPECIALLY with belly drum up. Now if you find yourself a free turn with charizard in and belly drum isn't active, that's another story.
Don't you need the Charizardite to Get Chari-Y so no, life orb.
For future reference, here's a link to a calc that's pretty easy to use:
Forgot that :P
I think it would be better just running a Rain Dance Team, to deal with any other Water Debuffs, it provides this MOFO with alot of OHKO well at least in my experience, so politoed is always a sweet starter to switch from into the Bunny.
A dual screener like Klefki can also help it survive the initial set up.
Speaking of wonderguard, shedinja could potentially force a switch, ruining bellydrum if no SR are up, lol.
