Only Luffy fans/trolls.
Akainu got punched into a hole in Marineford, we don't see what happens to him, he climbs out pretty fast.
Aokiji gets punched into a hole in Hachinosu, we don't see what happens to him, he climbs out pretty fast.
This is Kizaru's chance to get "beat" then get up like nothing happened.
But, I don't think Luffy punched Kizaru into the ground, so he should be up pretty fast, especially since this is the first powerful hit Luffy has gotten in (only other hit I remember was the opening kick when Luffy was in Base).
The interesting thing, is that Luffy is "down", but still in Gear 5. We know from his fight with Kaido that Luffy can go back into Gear 5 a lot faster than Gear 4, since he ran out, then powered up his heart/the Drums of Liberation again to continue fighting.
Kizaru sensing Luffy's Gear 5 was running out might also be Future Sight, just saying.
Don't you dare drop the Manga if Zoro fights Kizaru, Kinyagi.