Yup. Sara really is so underrated on hard courts but she is playing at a very high level right now.Two of the most in-form players!
That said, she isn't quite as good as Angelique on a hard court. Clay is the one surface I would favour Sara to beat Angelique on, but on hard this is a match I do expect Angelique to win.
But it won't be easy. I wouldn't be at all surprised to see this one go three sets and even if it doesn't it could end up one of those 2 setters that still exceeds two hours. This should be a very hard fought contest.