Fair enough; BUT while Serena seems to be active in Maria's head(by what we see on the court), Maria is so idle in Serena's head, she does not even know she (Maria) is there
She doesn't mind at all apparently
On a more serious note, Maria would love to play Serena a lot more and not once every year
therefore their form will obviously play a big part in their matches just like against Azarenka, Maria got the better of Vika finally you could tell that Vika was too good at the beginning of the year while Maria wasnt and then it changed in Stuttgart.
Maria started to play better and Vika less, see what I am saying.
Serena shows up every 3 months playing light out tennis, noone can keep up when she is that good players barely play her week in week out. Media were already talking about a rivalry between Maria and Vika since they met in three finals already in 5 months, Maria and Serena played 3 times in three years, it's true that Serena was out for a very long time but even before that they weren't playing each other a lot. Once in 2005, twice in 2007, once in 2008 and then once in 2010 this is absurd.
Anyway my point is that it would obviously affect Serena's strengths a lot more if she was playing a lil more like Maria and Vika
people are already arguing about a walkover in Rome what the hell is that?