I have a light Brahma rooster and he is huge! He is a gentle giant though. I will be taking him to auction though as I don't want more Brahma chicks. My Brahma hens took forever to lay compared to my other hens.
OK..so I really looked at the comb and all I can tell is there is for sure 1 row lol. It is pretty wide at the top, could be three rows.
As for the hackle feathers? I do know he/she is the only one that raises her neck feathers when bothered.
Really thick legs too. I guess I'll know for sure...