Two different attacks.
Hawkins was hit with a piercing attack. It pierced his body and he immediately fell.
Zoro was hit with an explosive attack that had greater concentrated energy that was designed to vaporize the area.
It doesn't stop there. Kizaru realized Zoro must have been very tired (injury) for him to fall after one hit.
Which is accurate because Sanji told us that Zoro still haven't fully recovered from taking all of Luffy's injuries and fatigue.
Yes, more of Zoro's greatness.
Hawkins was hit with a piercing attack. It pierced his body and he immediately fell.
Zoro was hit with an explosive attack that had greater concentrated energy that was designed to vaporize the area.
It doesn't stop there. Kizaru realized Zoro must have been very tired (injury) for him to fall after one hit.
Which is accurate because Sanji told us that Zoro still haven't fully recovered from taking all of Luffy's injuries and fatigue.
Yes, more of Zoro's greatness.