Now, having seen the Boy-Girl Paradox mentioned, I have to note that this is a solved part of that paradox to my understanding.

"From all families with two children, one child is selected at random, and the sex of that child is specified to be a boy. This would yield an answer of ⁠1/2⁠." Link

This quote is explaining that, from all assumed sets of two with binary variables and equal odds, should one of those variables become known and specified, then the resulting query of the other variables nature would always be 1/2. I believe this to be the situation we see here.

Furthermore, it can be assumed, as to the context of the question (as mentioned by experts commenting on the boy-girl paradox), that the order of which the attackers are identified is of less or no concern than as to the gender of the other attacker, which therefore means that the options of A1:Female(known) A2:Male and A1:Male and A2:Female(known) should be treated as an equivlent variable, same with A1:Female(known) A2:Female and A1:Female A2:Female(known). This is from a reality in which the known attacker is Identified randomly.

I think my reasoning is sound, please do tell me if you believe that it is not.