You know, women have been sexually abused by women, it happens — and women win against other women in sporting competitions.
Also, if you absolutely have to get pedantic about it, cis women do also win against trans women in sports — it’s just that this isn’t a useful news item to use as anti-trans propaganda.
It’s absolutely fine to be dismissive of these ‘concerns’ because these arguments are not worth giving further oxygen to. Even with the claim of giving an ‘unbiased’ or ‘balanced’ view.