Of course Murray will be ahead because Federer will still play many years at an old age.
I know that some Fed-haters on MTF like Certinfy love that because these H2H statistical concepts are a big part of the daily conceptual debate on MTF,
but personally I'm just happy about that because I want Fed to play still for many years
I know it's hard to understand for many ones here who keep on bullshitting about "legacy" and so on (and also I keep on saying that the retirement presented as "ideal" of Sampras made a lot of harm to the pleasure about watching old players, in the media as well, in the context of a global society not accepting getting old),
but Federer is not a member of MTF forum : he lives his own life and his goals are to play longer, enjoy longer and sometimes win longer ... for his pleasure and the pleasure of his fans who have a peaceful concept of life.
Another interesting question is: Will Federer retire as Nadal's turkey?
Conceptually and for MTF definitely yes it's even more obvious than for Murray : I can't see Federer as a "turkey" myself, he's not that kind of animal but you like other haters will have the pleasure to enjoy that