I just watched this game play video http://www.youtube.com/watch?v=yuyCOdwtvdk

then I found that the interfaces, game play, contents of this game are so similar to PL
examples:




My question is, as it is similar to PL, why do I have to play this game if I'm currently playing PL. Or why do I have to continue playing PL if I decide to play this game? This might effect both games.

Anyway, that's just my question because we don't see much information about this game at the moment and I thought this would be a completely new game experience.