You are talking about English then you are returning to the previous chapters...
Which one? ''We already know'' is irrelevant, we were talking about that scene only. And the main subject of Zoro's quote in that chapter is
unleashing Enma, not his own power, nor unleashing his other special swords, he is talking about unleashing
only Enma.
So the people who say
Enma is just a sword (zoro fans) took a huge L, as well as you.