It wasn't the wind that made them tired. It was the heat and humidity. Andy said after the match that Nadal ended up in hospital after his final against Joker a few years ago. Today Ferrer was cramping and Andy looked almost out for the count and these guys are ultra fit. And it was only a 3 set match so how tough were these conditions?
I don't think playing in the wind is directly physically tiring, but all of that extra concentration is mentally tiring, and if you can't go for winners close to the line, the rallies extend. It also impacts on the winner/unforced error ratio, which will be frustrating. Hopefully viewers take this into account when they get all judgemental about that stat too. Wishful thinking there!
There's still no escaping the fact that Andy didn't serve very well, which would have made it an awful lot easier, but like others, I am very pleased that Andy managed the win anyway in those tough conditions.
If anyone has issues with the quality of the match, they should perhaps have a word with the schedulers. I know it was for US tv, but I don't think it's controversial to suggest that both Andy and David would have played a bit better if the match was on at a time better suited to them. Having said that, there were enough great points to make up a good highlights package. I think I'll stick to watching replays of that.