Using different items doesn't mean much when the overall strategy is identical. Your relatively-standard Infernape and Greninja both use attack-boosting items. It scarcely matters if your Infernape gets a 20% (not 30%) boost from Black Belt or a 30% boost from Life Orb or a 50% boost from Choice Band. You're still using literally the most generic strategy for a generic beatstick Pokemon and then hyping yourself up because you gimped it oh so slightly in the name of originality. Same with Avalugg: Further inspection of your favorite website tells me that an Avalugg with Avalanche and as many Sp. Def. boosts as possible is actually not only very common, it's also pretty much the only option Avalugg has going for it due to its weird stat distribution and comparatively small movepool. Whether or not you intended to copy Smogon is irrelevant: You are still using the exact same strategies irregardless because, as I said in my first post ITT, said strategies work.

As an aside, I never said a Pokemon has to be bulky to sweep. I just find it very unlikely that, in all the times you've apparently roflstomped with your Stored Power Espeon, not a single of your opponents has had something as simple and common as a Dark Pokemon. Or a tanky Pokemon. Or a Pokemon with a useful high-priority move like Protect or Sucker Punch. Or a Pokemon capable of inflicting a status condition that can bypass Espeon's Abilities. Or just an extant Light Screen.