The first man is wrong here. She actually pretty average if not below average in size among women tennis players. She is super fit and strong for her frame but she's at a big disadvantage against the Sharapovas and Serenas and other Amazons. Her loss against Zheng was a mental collapse though due to the extra pressure she puts on herself in Australia.
All of the pitying posts about poor underachieving Sam are redundant though. She's number 9 in the world and has won about $12 mill in prize money. I'm sure she'll survive and do better once she gets overseas again.
“There is no best. There is just the discussion of who is best. Federer, he will always be in the first part of such a discussion.” Rino Tommasi