The bold part is mistranslation. From what I remember Chopper says that he becomes more aggressive due to carnivorous Zoan.
And the most likely thing is that the zoan also increases the physical capabilities of its user even in human mode.
So Kaku's 2200 dourikis would increase, but we don't know how much, if you add his swords to that, it increases even more.
What are my arguments? This
Nika Nika, rubber body in any state.
Hito Hito, Chopper's intelligence and ability to speak
Tori Tori, Marco regenerative ability in normal mode
Hebi Hebi, Orochi survived the decapitation even while in human form.