Focus Sash on a late-game priority revenge killer in an entry-hazard meta that also takes recoil from its two main STABs?

Acrobatics + Gem is a nice little combo for one-turn damage, but you lose out on any damage boost (which hurts a LOT considering its painfully low base 81 attack) in Flare Blitz which is heavily needed for neutral coverage against the likes of Skarmory and Flying resists.

252+ Atk Talonflame: Flare Blitz vs. 224 HP / 252+ Def Skarmory: 120-142 (36.69 - 43.42%) -- 99.27% chance to 3HKO

Acrobatics + Gem is okay if you're going for an early-mid game sweeper if you use it in tandem with Swords Dance, but otherwise, it's really only strong on the first move and pales in comparison past that to Life Orb Brave Bird. And in that aspect, it's largely outclassed by LO Greninja. Recoil isn't a problem considering Talonflame should be used as an end-game sweeper with spin support somewhere on your team, its too frail to deal with the rest of the popular threats in the metagame right now in Aegislash and Azumarill, the two of most used in XY right now, with Aegislash coming in at number one.

This is the Talonflame set I'm using, experimented with it for a few days now, and it performs amazingly when used as an end-game sweeper to secure the win. Rapid Spin support is compulsory.

Reign (Talonflame) (F) @ Life Orb
Ability: Gale Wings
EVs: 80 HP / 252 Atk / 176 Spd
Adamant Nature
- Flare Blitz
- Swords Dance
- Roost
- Brave Bird

The EVs are specialized to outspeed positive Speed natured, max invested Thundurus-T which is the fastest threat in OU that resists Brave Bird - every other threat in OU takes neutral/super-effective damage from priority Brave Bird, so EVs are not placed to outspeed those. The rest of the EVs are placed in HP to help mitigate the %HP damage Talonflame takes from Brave Bird/Flare Blitz. It works really well even in mid-game if Aegislash and TTar are removed, it can switch in on a Steel or something like Breloom, force it out, Swords Dance, and sweep.

tl;dr im a fgrt