You gotta run a certain spread
ill put It up later
You honestly don't expect Bronzong to beat Mega Salamence, Xerneas, Primal Groudon AND Arceus all at once, do you? No. I never use Bronzong as a primary Xerneas check because it takes heavy damage from Focus Blast, like everything else. However, if it's necessary, you have a 50/50 shot of coming out on top.
Hardwalls is the wrong term to use versus Mega Salamence, as Bronzong has no reliable recovery making it tough taking repeated hits. Hidden Power Ice has an 85% chance to 2HKO 0/0 mega Salamence, which is kind of nice, I guess.
While i personally use Shadow Claw Arceus, Stone Edge Arceus is certainly popular, and Physically Defensive (as splitting up the EVs really only makes it take hits weaker on both sides than if you just invested in one stat.) Bronzong has no problem eating up hits from it.
+2 252 Atk Life Orb Arceus Extreme Speed vs. 248 HP / 252+ Def Bronzong: 104-123 (30.8 - 36.4%) -- guaranteed 4HKO after Leftovers recovery
That is SE Arceus' best move against that.
Non-Fire move Primal Groudon is also relatively common (RELATIVELY.)
252+ Atk Primal Groudon Stone Edge vs. 248 HP / 252+ Def Bronzong: 50-59 (14.8 - 17.5%) -- possible 9HKO after Leftovers recovery
It's niche as fuck, but it can do its job.
tbh I really don't mind if Zong stays at C+, I can see why it's outclassed, but it does possess certain advantages, notably not dying to Ground moves.
Seriously though can someone explain to me why Greninja is higher up than Scolipede? Protean is pretty neat but I'm just not seeing the advantages.