This thread gives the impression Anna plays Maria Sharapova, but Anna's opponent is Viktoriya Kutuzova. I agree, Viktoriya is a talented tennis player and currently a difficult job for Anna, but she is on the other side no superior player, where Anna's knees are knocking.
First, Chakvetadze is on a horrid streak. She won exactly one match since the beginning of october.
Second, Kutuzova played well at IW last year, and beat Vesnina pretty easily.