Originally Posted by Nathaniel_Near
I think it has more to do with how the elements he is strong with and/or worked on coincide with the requirement hierarchy of the era, and this has further aided his maturity and mental powers. As for Berdych being superior, that's a close call with the current conditions. Ferrer has shown more consistency but Berdych has made a major final. For me it's all about what is most suited at a certain point in time, and who can adapt the best to certain conditions, which is not always a question of who is superior at adapting but also pertains to some luck, after all, it would be unfair to ask an elephant to climb a tree...
If conditions had become faster instead of slower, Ferrer could still consistently be top 10 but I'd imagine that someone like Tsonga might have traded positions with Ferrer in terms of right now holding a top 4 rank. I'd have quite liked Tsonga's chances to win a Major title actually (though he came close at WTF 2011). I still hold out hope that he can win one as I am a big fan of his game. Incidentally, I was particularly pleased when Ferrer won a 1000 title finally, as I believe it is the least that he deserves.
All I am saying is that I think you may be wrong about the slow conditions hugely benefitting Ferrer, they benefit players like Nadal and Djokovic a lot more than they do David. Hell, even back in 2007 Ferrer made the WTF final on a fast carpet court, it is a myth that he struggles on fast surfaces when in fact he may even be better on them than slow ones. He also beat Del Potro last year at Wimbledon, a relatively fast court even these days.