1 GS, Olympic gold and 8 MS plus #1 is ahead of 1 GS, 4 MS and #1 even if he had less weeks than Roddick did.
Unless there's an outrageous amount of weeks at the top e.g. Lendl's 270, then it's no contest for me.
But that has nothing to do with GS > #1
Murray only goes ahead by MS and Olympic Gold so it's off the topic of GS's.