FFXIV will get content updates at the same time in the US as the rest of the world (see: at all).
FFXIV servers will not be shut down 2 years from now.
End of comparison.
Disclaimer, I played PSU at release for many months, it was fun while they were adding stuff and continually increasing the level cap, but then they stopped adding stuff, and flaws became glaring. I think there have been literally 0 items added in the past year, since the 'expansion' came out. When it went free to play last month, my level 30something alt character could equip the most powerful weapons [level cap is 170], game is broken as ****, I"m glad it's being sent back to whence it came at the end of the month. They mentioned they may be making a real PSO game after this. I look forward to it, but very hesitantly, after how they handled PSU.