Dude, you're talking out your behind. "most of those servers are very quiet?" No, they're not. SE closes servers to character creation when they have too many people online. There are more servers closed to character creation at this very moment than XI has period.
I'm really not sure how you're deluding yourself into thinking that DQX and FFXI are more successful than FFXIV, but whatever you're taking to make yourself feel that way, I want some of it!
If you search in XIV, you can look in each of 8 different regions (the three city regions, and the 5 field regions) On my server all of them except one return well over 200 users, that's 1600 players not counting the ones that are in instances (which can't be searched directly), and this isn't even prime time. Every single Legacy world is like that, and many others are as well. Additionally, 16 worlds are currently locked to character creation, and this isn't really a peak time for either the JP or NA datacenters.
/sea all in Shiva/XI just turned up 705 players for me. Hyperion/XIV I'm still adding it up as you can't /sea all but my estimate is probably not to far off (again excluding players in instances)
Clearly you don't play the game since you really don't have the slightest idea how many people are on a server.
So please, keep telling yourself DQX and XI have the lion's share of players. Don't get me wrong. I love XI and I'm sure DQX is great too. I wouldn't be here posting if I didn't have an FFXI sub. But you really need to face facts.
Your comments just have so much fanboyism injected in them... I literally am playing both games at the same time right now. I think that's a pretty good indication I like them both and can look at them objectively. So I'm going to stop things here and let the other people reading this stuff decide.