Ok, let's change it to the spread that Denisss has on his Espeon.
0 SpA Espeon Stored Power (180 BP) vs. 252 HP / 0 SpD Unaware Quagsire: 309-364 (78.4 - 92.3%) -- guaranteed 2HKO after Leftovers recovery
(2 speed boosts, 1 Iron Defense, 2 Calm Minds)
0 SpA Espeon Stored Power (140 BP) vs. 252 HP / 0 SpD Unaware Quagsire: 240-283 (60.9 - 71.8%) -- guaranteed 2HKO after Leftovers recovery
(2 Speed Boosts, 1 Iron Defense, 1 Calm Mind)
0 SpA Espeon Stored Power (100 BP) vs. 252 HP / 0 SpD Unaware Quagsire: 172-204 (43.6 - 51.7%) -- guaranteed 3HKO after Leftovers recovery (1 Calm Mind, 2 Speed Boosts)
That's still very hefty, and it's very easy to get higher than 100 Bp on Stored Power with just a little more Speed Boost stalling from Scolipede, or with an Iron Defense, or with whatever else any other Pokemon has to pass.
Scolipede can only pass so much speed though between having to spam Substitute and not having Lefties. Also, all you have to do is switch in a Dark-type or anything that deals with Psychic like Aegislash for example. Then Espeon can't do anything, is forced to BP out to something else, so then Quag comes in safely and Hazes. If you get up SR at any point, Scolipede gets worn down super fast and you'll only need to Haze 3 to 4 times in one match (depending on how often it Subs/comes in on SR) before Scoli bites the dust.
These calcs just don't prove much in practice. And it's easy to get many boosts against a pokemon with Haze? Please explain :x The way I see it, the BP user messes around with Scolipede while you just attack with anything that breaks its Sub, then you bring in Quagsire, they pass out to Espeon as you Haze, then they have to pass out without any boosts because Espy can't do anything to Quag while you always break the Sub. I mean if there's any flaws in my point of view please point them out, just keep prediction out of it.