It's RPS time...
Berdych is rock
Ferrer is paper
Federer is scissors
Berdych is more "linear" a player and doesn't hit as many creative angled or spin shots that get Ferrer out of position. Ferrer is able to make him hit that one more shot to win the point and that wears Berd down, physically and mentally.
Ergo, paper covers rock.
Berdych is bigger and rangier than Ferrer and gets to many shots Federer uses to put away or set up for the putaway vs Ferrer. Ergo, rock crushes scissors but scissors cut paper.
"When a man is tired of London, he is tired of life"...Samuel Johnson 1777
"When a man is tired of Federer, he is tired of tennis"...stringertom 2014