It's literal fucking PIS but whatever. "This power knows no restraint" --probably referring to his sword, which isn't gonna differentiate allies from enemies if it hits you.
But yeah, Mihawk was going all out and couldn't touch pre-TS Luffy. Disingenuous motherfuckers left and right. Next time you get mad about people downplaying the shit out of the admirals, I'm gonna remember this shit because I always feel bad and argue against those people who do the same thing to you as you're doing right now.