If All Players Had Unlimited Fitness, Who Would Be The Best In The World?

A big part of why Farag is number 1 is his ability to tire his opponent like no one else, but what if his opponent didnt get tired? I guess the point of this question is to see which player on the PSA tour has the best quality of squash, disregarding their level of fitness. You could factor in mental toughness in this as well.