Federer's big problem is his weak chipped service return that is jumping pretty high and can be hammered easily in each corner, this is what Berdych did with great success. furthermore Fed's forehand was another weak point, either he hit it too flat in the net or long. you can't play tennis like this against any top 20 player without being punished immediately.
it was about the same game he played against Falla and escaped on the knives edge but only because Falla hasn't the class of Berdych.
whatever, it was probably the last time in Fed's career when he was seeded #1 in a big tournament. i think his star is going down, slowly but surely - sad but true.