Com'on, guys, Fed IS joking. I'll never believe he spoke seriously. And even if he did, they are old pals, they're allowed to speak such about each other
I just read it and I agree that he was joking. No way he would say it seriously.
__________________ Ernests Gulbis in Indian Wells 2013:
"If I finished my career right now I would have a lot of regrets. I would be hearing all my life, 'He was a talented guy but never made it.' I want to be the talented guy who changed his mind and made it."