Murray needs to get to #1 at some point. Hewitt or Safin managed to be the best at some point in their respective careers.
Murray's young career was when Nadal reached his peak early (22ish) and Fed was in his peak. No chance of number 1. These 2 will be the main GOAT contenders alongside Laver once they're done.
Then when Fed started to age, Djokovic emerged with unreal consistency, 5 slams, 3 semis and 4 finals in the last 3 years...amazing consistency and taking the number 1 ranking from a fit and in form Nadal in 2011, something Federer could never regain without Nadal being injured. That's a testament to Djokovic's greatness. He's also the AO goat and a future tier 1 great...very likely to break into double figures for slams.
Being number 1 now is fucking ridiculous. The 2 guys at the top have 12,000 plus points. When was the last time 2 tier 1 greats dominated the game like this? Fed and Nadal 07-09. Would a peak Safin or peak Hewitt have a chance of even being top 2 in times like these? All reasonable fans of the game know the answer.
Hewitt was 80 weeks at number 1. During this 80 week reign. During a consecutive year and a half of being number 1, Hewitt won 2 slams and reached 2 semis. That was his best career period really. Outside of that, he was a losing finalist twice and had a couple of semis. His level of play in 05 was the most consistency he's ever shown...3 GS finals. Murray in the last 2 years alone has 2 GS, 2 losses in GS finals to better quality oppositon+ a semi+ the gold. In Hewitt's era, 100% Murray would have made number 1. Safin is far too inconsistent to even discuss, biggest waste of talent in history. Should have been the one challenging Federer consistently...had the game for it anyway.
One more slam and there's no comparison really, he's already had a better career than Hewitt. Hewitt had 80 weeks at number 1. Djokovic has 100. Nadal has 115. That's close right? What the fuck does that tell you? Djoker and Nadal are tennis legends 17 trillion light years ahead of Hewitt in every way, but their reigsn at number 1 indicate and equal level of dominance...look at what Nadal had to do to get to number 1 first time...beat Federer senseless in the FO, beat the grass goat and his 65 match winning streak on grass and gain Wimbledon, while making 2 hardcourt semis all whilst being 22. In 2010 he won 3 slams to regain it. Djokovic beat Nadal senseless in 2011 and had the greatest year barring Fed's 06 in the last 2 decades...the quality at the very top of tennis has been of a different level since 07-08 onwards. (2010,2009 channel slam being the exceptions)