That's an unofficial title, though I think it's pretty safe to say that "Little Gray" has played more Warcraft than you. A lot more.
Courtesy of Gamepro comes word of the Taiwanese player's absolutely insane Warcraft accomplishments. In addition to having nabbed every single one of the game's achievements (minus a brand new one that cropped up in the game's latest patch), he's the first player to complete all 986 tasks listed in the game's Armory. Considering that over 11.5 million people play the game worldwide, that's one heck of an honor.