Reacting and blocking incoming things while asleep?
A feat that we've only seen Yonko level characters doing
The fact that asleep Zoro effortlessly and perfectly blocked (dissipated, actually!) a Rankyaku as big as a ship, just make the feat even better
Also
It's interesting how much stronger Kaku is now
The move that was his absolute strongest before the time skip, and that he needed his Zoan to perform, he now does very casually and without even needing to use his Zoan transformation (unluckily for him, Zoro, who before the time skip needed Ashura to crush that move, now easily achieves that result with a mere single sword nameless block)
It's a parallel to Lucci who had Rokuogan as his absolute strongest move before the time skip, and now uses it very casually as an entry level attack