Sweeper & stallers are usually the best way to go for battle subway.
Better pokemon for your team could be-
Zangoose @ toxic orb
Nature- adamant (+attack -Sp attack)
EVs- 152 hp/252 attack/104 speed
Ability-toxic boost
Moves-
- Arial ace- covers fighting types
- close combat- coverage
- x-scissor- coverage
- detect- good protection
Emogla @ flying gem
Nature- hasty(+speed - defence)
EVs- 152 attack/152 Sp attack/ 204 speed
Ability- static
Moves-
- acrobatics- STAB+ power up from gem & when gem is used it gets boost from no item on same turn
- thunder/thunderbolt- STAB
- iron tail- ice coverage
- u-turn- quick switch outs
Other good pokemon-
Metagross@ steel gem
Nature- adamant
EVs- 104 hp/252 attack/152 defence
Ability- clear body
Moves-
- zen head but- stab & can make opponent flinch
- meteor mash- stab & can raise attack
- e- quake- typical physical tank/ sweeper move & has coverage for half of his weaknesses & more
- iron defence- for extra defence
Garchomp@ dragon gem
Nature- adamant
EVs- 104 hp/252 attack/152 speed
Ability- sand veil
Moves-
- dragon claw/rush- stab & really good power
- e- quake- stab & good coverage
- fire fang- covers many types & main ice weakness
- swords dance- to power up fast/ sand storm- to have extra evasion using sand veil ability
Shuckle @ lum berry (best paired with garchomp)
Nature- impish
EVs- 4 hp/ 252 def/252 Sp def
Ability- sturdy
Moves-
- Sandstorm- gets extra Sp defence
- Double team- use only in battle subway because it is usually banned
- Rest- for when he gets damaged & w/ lum berry, he can easily wake up presto
- Toxic- use at beginning the double team stall so your opponent intoxicates himself to death. If your opponent is poison, steel or has an ability that nulls toxic, switch to garchomp.
WARNING- this shuckle moveset is amazingly powerful, I have taken out teams in the battle subway with it. The Spiritomb moveset coming up is the same- easily destroys battle subway opponents
Super Spiritomb @ lum berry
Nature- impish
EVs- 4 hp/ 252 def/ 252 Sp def
Ability- pressure
Moves-
- hypnosis- use at beginning of battle to use double team
- double team- to make Spiritomb intangible
- dream eater- use to heal & destroy fighting pokemon & to damage pokemon when phase double team is over
- dark pulse- use to attack dark types that aren't able to be hypnotized & coverage + it can make opponents flinch.
Spiritomb/ suckle will take some hard work to accomplish, but it will make you beat the battle subway bigtime.
Hope this helps:)