Murray just doesn't believe and refer himself to Federer/Nadal . I guess he reads too much media. He tries a lot against Nole because of the age and playing longer together. I guess he takes a lot of time to trust others and himself . That's in contrast to Nole who was always respectful but always believed himself equal to those 2 and anyone else.
Federer was very happy here and this means a lot to him . No more excuses I guess.
So the 8 times he did beat Federer he did so with no belief? This is a disappointing result for Murray, but let's not extrapolate too much.