Cloud's Apollo
Restricted
Has WoW beat.
The hidden player stats combined with the look of the armour not necessarily having to match the armour stats creates for a far superior PVP experience, where you can't be entirely certain how powerful a certain character might be; it adds a greater sense of risk to PvP combat.
The character customisation allows for far more diversity, which is important in giving the player more of a sense of individuality in an MMORPG.
And lastly, it actually has an underlying storyline that directs and drives the player through the contents of the game - fundamental for any kind of RPG (and something that WoW lacks).
Not to mention the far superior graphics and more captivating artistic design.