Diablo Coming to PS3 and PS4: Hooray?

Blizzard made a surprise appearance at the conference. Viewers were anticipating something fresh and wondrous but we were quickly let down when actual footage revealed Diablo III will be coming to Sony consoles. Although, the game will most likely look great is it really worth it? Perhaps for the ultimate fans this will be a guaranteed pick up but for the rest of us, not so much. Even the representative appears a little bummed.