It's possible, but extremely unlikely. Even if it is harder to break King's defense than it is to break Kaido's, Kaido might still be able to withstand much thougher attacks than King as Kaido isn't just all about durability; we need to also factor in endurance and recovery rate.
Kaido's endurance is even more beastly than his durability if you ask me. Big Mom started crying soon after getting hit by a few rods while Kaido's been getting stabbed by every swordsman he's fought and had his internals crushed by multiple people, yet he's going strong.