So the article is quoting MMO-Population.com, and barring questions about HOW they get their data, the FF14 data seems misrepresented.

Here's what the top 10 list shows:



It shows WoW at 1.21 M active players and FF14 at 1.27 yeah?

If we click WoW it also shows 1.21 M on that page:



But when we check FF14s page it says 846k



So the numbers the article is quoting are wrong, one way or another.