On the other hand, Guild Wars 2, a "buy once and play free" mmo-rpg has only reached 3 million sales this January, I honestly expected more since it was a sequel of a popular title and was hyper-hyped as "the new revolution in how mmo-rpg's are played".
What do you think would be the strengths of TESO compared to the other big competitors in this market? The heritage of the single player series? The sales of Skyrim? (Skyrim has supposedly sold 11-12 million copies by now). If every Skyrim buyer gave TESO a try, that alone would grant a player base equal or bigger than WOW's.