Nah she just isn't good enough to compete with her. Only Azarenka is when Serena's playing even half decent.
I would say it is a mix of both honestly. It is really weird though, Maria can destroy anyone but when she faces Serena she gets destroyed. You would expect Sharapova to give her a little bit more of a challenge but she just gets destroyed. Other players actually give Serena more of a challenge than her.
I guess when Sharapova goes up against Serena, she comes into the match honestly believing that she doesn't have a chance at all to win.
Nadal/Nalbandian is on bitches! Need to find where it's on to watch.
As for Serena, Azarenka should've done her at the US Open. As much as I hate the cheating drunk sounding donkey, she had Serena by the balls in that final set. When it comes to Serena, most of the game is played in the mind, before & during. Sharapova definitely walks out looking like she knows she's already lost.