Murray doesn't rate Federer as highly as Nadal. When Murray plays Federer outside of a Grand Slam, he beats him - and when it is a Grand Slam the opposite happens. So you couldn't bet against that happening again if they do both make the final.
However, Murray will not be frightened by Federer. I know he really thought he would win the Australian Open and it was a shattering blow when he didn't. Murray struggled to come to terms with that loss; he finds it easier come to terms with defeats to Rafa because I know he feels that Nadal is in a league above Federer at the moment.
This article does not come as a surprise really, given the extent to which Reed is confident in proclaiming to know
things which he most probably does not. Sure, Nadal has had a far better season than Federer this year (though the opposite can be said since the start of the summer hard court season), but why does Reed profess to have knowledge with regards to the musings of Murray's mind?