The Zerglings that were incredibly difficult enemies to humans were easily massacred by the Zealots.
Every Zergling that charged at the Zealots would receive the Zealots' attacks. Although the Zealots were not that fast when attacking, they would only need two cuts to kill a single Zergling.
Their attack power was simply stronger compared to the game.
If it was not because the Hydralisks continued to fire needles at them, then a hundred Zerglings would be quickly annihilated.
Naturally, it was not only the Zerg side that received damage.
The Zerglings appeared to have been injected with chicken blood. They crazily charged at he Zealots. As long as they got close to the Zealots, they would raise their sickle-like arms and cut at the Zealots.