With one swing
Their powers work differently. Akainu's meigo was so lethal that removed a portion of WB head and it was a small, concentrated attack. On the other hand Akainu tanked a punch that split an island.
Their logias don't seem to be very suited for widespread distruction (at least Akainu and Aokiji) in the same vein of the Gura for example. But they excel in lethality. They were also countering each other in Punk Hazard so it makes sense to see a scenario like that.
They still split the island and permanently changed its climate, like FOREVER.