@greasyshoes
It isn't about the average person. Of course there are unfit men, obese men, non swimmer men etc who could all be easily beat in a swim race by a woman. However when you take athletes - who are all at their fittest and training hard - the men are leagues beyond the best of the women, in pretty much every sport. Often high school teen boys can swim or run similar times to women's world and Olympic records.
Lia has been able to easily beat her competitors who are Olympic medalists without even trying or giving a best effort. Her splits show she slows down to avoid getting too far ahead. They are just on different playing fields.
Of course there are individual biological advantages within a biological sex. Michael Phelps also had an advantage against most male athletic swimmers - but he is an anomaly. However pretty much all trans women who are athletes will beat biological female athletes. It isn't an anomaly at all. Just the reality of being biologically male.
Statistically if trans women are .5% of all athletes, they should win .5% of the time. However in most sports, the transwomen immediately rise to the top and break the records and win the events.