Reasons I'm voting Brock:
-Superior numbers
-All Pokemon resist Sleep Manip and hit harder when using same-type attacks.
-Onix boosts speed with Salac Berry when it drops in HP. It has Sturdy to prevent OHKO, Sand Tomb for damage over time, Protect to block attacks, Stealth Rock for battlefield control, and Sandstorm for DoT and defense boost.
-Golem is immune to OHKO, has a Dark-Gem boosted Sucker Punch for a speed boost, Iron Defense for Dura, Earthquake AOE, and Stone Edge for piercing.
-Kabutops boosts speed in water or becomes immune to crits, Stone Edge Piercing, Liechi Berry boosts attack when low HP, Swords Dance for AP, Superpower boosts stats briefly, but lowers them after, and Aqua Jet ups speed.
-Omastar boosts speed in water or becomes immune to crits, weakens one grass attack with its berry, boosts stats and Danmakus with Ancient Power, Hydro Pump is considered more powerful than normal attacks, Ice Beam freezes the foe, and Earth Power can reduce the foe's Dura.
-Aerodactyl reduces the foe's stamina with Pressure, reduces one rock attack with its berry, Earthquake and Rock Slide AOE, Rock Slide stuns the foe, Thunder Fang electrocutes, paralyzes, and stuns the foe, and Tailwind boosts the team's speed. It can also fly.
-Relicanth moves faster in water, has a Rock-Gem boosted Rock Slide for AOE and stun, Waterfall for stun, Yawn for sleep manip, and Rock Polish for speed.
-Brock's team are actually H7A, and scale to >3.181 Gigatons.
-They also have Class T LS
