I am not knocking Winx, but I still think Phar Lap's performances are marginally better.
He won 37 out of 51 starts and 32 out of his last 35 starts , in the other 3 he finished second twice and carried the grandstand to finish unplaced in the Melbourne Cup. In that sequence of runs after winning the Cox Plate an attempt was made on his life by two assailants on Derby Day who fired shots at him as he was walked home from trackwork. That same afternoon he went to Flemington and won the Melbourne Stakes over 10 furlongs ( now the MacKinnon Stakes ) he was then floated away from his familiar stable to Geelong to avoid a further attempt on his life. On the following Tuesday he won the Cup, over 2 miles then followed up on Oaks Day winning the Linlithgow Stakes over 8 furlongs before fronting up on the final day of Cup week winning the CB Fiisher Plaste over 12 furlongs . In other words a win EVERY day of Cup Week.
His record of winning that Melbourne Cup, both the AJC & VRC Derbies, two Cox Plates ( he only contested two ), three Craven Plate and numerous other WFA races puts his Australian record into perspective . He was then shipped by boat to USA and won the Agua Caliente Handicap, at that time the largest prize money ever offered in North America, in course record time carrying 58.5 kg .
Those multitude of wins are surely are a little better than Winx's wonderful wins.