To be honest I don't agree with this either... I mean, come on, sure, Murray has to win several more majors to be named in the same league as Nadal, Federer and Nole, but that is just tennis history. I truly believe Murray belongs in the Top 4, and not a Top 3 of Nole, Federer and Nadal, Murray has won USO, Olympics and reached the final at Wimbledon and AO.. Sure he belongs in the Top 4 discussion as of NOW, but not before. The real thing now is that even if he has reached finals in the last 3 majors he needs to keep focus on this. I mean, let's look at the numbers again. Emma is eager to say Murray tanked MS and lower tournaments because he was focusing on Grand Slams, well that hasn't been the case for all of the other Top 3, hence probably tell us why everybody else is eager to remove him from the Top 4.
Bottom line, I see Murray winning multiple slams although that hasn't occured yet... But Murray definitely is in the Top 4 discussion.. my 2 cents.