Although I agree about the AO 2008. Her game clicked like it never clicked before
She was the perfect combination of power play + amazing movement/variety. She was virtually unbeatable
Though I am optimistic that she will eventually find that level again as there have been indicators (2012 Stuttgart F vs Vika, Olympics SF vs Kiri, Beijing QF vs Kerber, etc.) and her overall form in 2012 was pretty great.
I'm quite optimistic that she can sustain a high level for long periods of time like she has in 2012 and prior to surgery