Both wold class athletes. One male, one female. The female is not an inferior athlete. The male is simply biologically superior physically. That difference does not disappear simply because someone is gay, bi or trans.
Because it was a mixed relay, 2 men and two women on each team. Had it been all men team vs all women team it would not be close. Men's recordr 4 x 400 2:54. Women's record 4 x 400 3:16
Not too much of a sports fan are you? Never saw a relay race? And are you advocating that we do away with the male/female sport distinction and everyone compete against each other regardless of sex/gender? There is a reason that is not how things are done and that reason is it would be totally unfair to people born female overall.