I have found that feathering varies from one variety to another, and from bantam to large. For example, my bantam lights and Buffs feather entirely different. My light bantam females(pullets) feather in quickly, while the males(cockerels) are much slower to feather in, especially in the saddle area. My buffs feather pretty much equally, pullets and cockerels. It varies by line as well. I would just be cautious with a blanket statement for all Brahmas.Brahma roos typically feather in a little later than hens.
BTW male less than one year COCKEREL, Male one year or older COCK. Female less than one year PULLET, Female one year or older HEN. Cage card abbreviations are Cockerel-K, Pullet-P, Cock-C, and Hen-H. "ROO" and "GIRL" do indicate sex, BUT the proper terms are much more specific.