It never was the best single-hander in Switzerland. Wawa's has always been better. I'm not sure where this idea came from, that Federer's backhand was a weapon or even particularly reliable from 2004-2007. It wasn't. His struggles with a young Nadal indicate that it has always been a fairly significant weakness.
Anyway, neither of us will convince the other, so we might as well agree to disagree. My days of debating on MTF all day are behind me.
You really think Federer defends as well as he did when he was 24? You think his on the run game is just as potent as 6 years ago? Really?
Federer is far from being in a wheelchair but it seems quite clear to me the consistent explosiveness that he was able to unleash at his best is a thing of the past. What was an immaculate forehand every third rally is now just once in a while. This is just the eye test, of course, forget results because they can always be misleading; although I agree he's certainly playing better right now
than at any time in the past few years, his 2 majors in '09 included.