How is most years as the world's best player an overrated record?
Because nobody gave a shit about this record until Sampras closed in on it, and his team and a few tennis writers began to hype it up.
Connors finished as the year end no. 1 5 years in a row from 1974-1978 but who cared about that back then.
And with the rolling ranking system, being no. 1 at the end of the year isn't any better or more significant than being no. 1 in March. I'm no Federer fan but he was the world no. 1 after Wimbledon 6 years in a row from 2004-2009. How is that any less impressive than Sampras being world no. 1 6 years in a row in late November.
Weeks spent as world no. 1 is what matters.
In fact many records have been overhyped in recent years. Emerson had no idea that he even held the grand slam title record for 30 years or so before Sampras closed in on it and the media got excited. No-one cared when Borg closed in on it including Borg himself.
No-one cared about Vilas's 57 match winning streak on clay before Nadal broke it in 2006. Vilas himself knew about his overall all-surface winning streak but didn't have a clue that he held this record on clay. And similarly Connors had no idea had he had spent the most consecutive weeks as world no. 1 before Federer closed it on it and broke it in 2007.