User blog comment:12th Supernova/Chapter 778: A King's Resolve, A Pirate's Attack/@comment-26161031-20150226134201/@comment-176.145.198.155-20150302000724

That's what was really difficult. Dressrosa is mostly made of rocks so Pica can hide anywhere in Dressrosa. That's why he had to cut the connection between the rock Pica was hiding and the rock connecting to the entire island. Once he was mid-air, he had to corner him and he had to do it fast while he was in mid-air too. I'm glad Oda didn't bother show Zoro's movement while he was in that position. You must always think twice before you start saying something. If you think it must have been easy for Zoro to do that while in mid-air with that position, then when you will see in that the anime version Zoro will struggle a little to cut him in pieces, you will just throw some complaint about how it was made different from the manga when it was just your misconception.