Federer and Murray had junk clay seasons in 2012, losing sets off the wrong players at the wrong times.
2011 however was a different story, both were playing amazing on clay.
I'd say Murray with faster movement could maybe pull it off, but I'd say its very, very close.
Hope to see a clay match next year.
Q: How close are you and Djokovic?
Murray: Well he's in Dubai and I'm Doha, so around 450kms