This is what I get but perhaps he is shotting directly into the sun. And this was a nasty day so I'm sure I did not over exp.
Okay. Well, you know this already, but... how you meter can make all the difference. Suppose e.g. that you average metered this. The camera will see all that backlighting and get tricked into a shorter exposure. Which will then cause you to underexpose her and the foreground... hence more grain and less optimal colouration there. There is a good dose of contrast in this scene and I'd guess you could easily have 3-4 stops difference in the optimal exposure for the foreground and for the background. This is a case where avg. metering can really screw you.