I find it hard to take names like Phil Taylor or Ronnie O'Sullivan seriously as being better sportsmen than Murray. Like surely at some point the standard of the sport and athleticism has to play some kind of factor.
Murray reached the final of every Grand Slam, won three Grand Slams, won 14 Masters titles (which is the fifth most of all-time, only behind Djokovic, Nadal, Federer, and Agassi), and 16 other ATP titles, won the Davis Cup for Great Britain quite literally by himself, won two Olympic gold medals, a Silver medal in doubles, won the World Tour Finals, reached world number one in a period where he was up against the three greatest players of all time. His record in Grand Slams at his peak between 2010-2016 against everyone not named Roger Federer, Novak Djokovic, or Rafael Nadal was 131-7 which is an absurd level of dominance. The three greatest of all time he also has a combined 29 wins against. All in one of the most physical intensive, demanding, and gruelling sports you can play.
His 2016 season alone was ridiculous. He reached the final of the Australian Open, and the French Open, and then won Wimbledon, won the Olympics, won the tour finals (in which he beat the world number 2 (Djokovic), 3, 4, 5, and 7 consecutively), reached 13 finals and won 9 of them, went on a 24 match winning streak to end the year, won 5 consecutive tournaments, reached 7 consecutive finals, and finished the year with a record of 78-9.
The idea that some overweight guy playing a glorified pub game that you can play with a pint in your hand is a better sportsman than Andy Murray is absolutely ludicrous to me.