Jango doesn't wear any form of trophies from the hunt like we see predator and boba fett do... wich is supposed to be an ancient ritual here one arth by ancient cultures etc.
boba's sign of "dont screw with me" are the cape, braids and the killstripes.
also the heavily weathered armor with the "shocking" skull symbol must be signs of warning and competence.
whereas Jango looks like a power ranger, Boba looks like a lazy "bum" who doesnt spend time cleaning and maintaining his stuff