>>19614721>>19614674>Infernape vs EmpoleonInfernape outspeeds and OHKOs with Close Combat.
Infernape wins.
>Empoleon vs TorterraEmpoleon starts does <1/3 with Drill Peck, fails to 2HKO with Hydro Pump; Torterra EQ OHKOs most of the time (~70% given max HP EVs for both)
Torterra wins.
>Infernape vs TorterraInfernape outspeeds and OHKOs with Flare Blitz. If it cannot hold a Life Orb, then Torterra survives, and OHKOs with EQ.
Infernape wins with items, Torterra without.
Even WITHOUT NATURES, IVs, EVs, and such, they still have base stats and movepools. Infernape always outspeeds all of the trio and has Super Effective moves on both, just barely lacking the power to KO Torterra's defenses without items. Torterra can otherwise sweep with good bulk and Super Effective EQs despite being so slow its always last.
Empoleon has the worst level up movepool that conflicts with its stat spread (physical moves with good Special Attack), and each of the other mons hit with physical moves against Empoleon's bad defense.
Basically, Empoleon is the last mon of the trio to win, competitively or with your arbitrary deathbattle rules.