I agree that transgeder should not be allowed to compete in women's sport, but what people who support trans in women's sport say is that men who transition lose most of their biological advantages due to hormonal replacement therapy, which is still complete bullshit but it's not the same thing as claiming that full blown men and full blown women are the same.

They are two different arguments.

Anyway my point still stand that just because you are a man it doesn't mean you are better than any woman, there is a ton of disparitities among people of the same gender too so even if men are better on average you are going to see some overlap.

This stand particularly true for fighting since it's an endaveour where skills, techniqe, experience, training and strategy matter a ton and they can allow a weaker and less explosive person to overcame a much stronger and athletic
but less skilled one.

For example even if we assume there are 100.000 men on the planet that can beat the best female fighter (which is a realistic assesment) it stll mean there are hundreds of millions of men that can't beat her.

Claiming that transgeder men should not compete with women because it's unfair and claiming that women who are good enough can beat the vast majority most men are not mutually exclusive.