Although one individual within a breed may not fit a label and be an exception there is something to be said in reading reviews of a breed to get a good idea of a breed's tendencies. I mean, Leghorns are assertive to downright cannibalistic toward gentler or docile breeds and although I had one White Leghorn that seemed the exception at first - being fairly kind and humane as an alpha flock leader - she did eventually display very aggressive characteristics in her 3rd year. Another Buff Leghorn turned cannibalistic mean right at her first birthday. So do forgive me for putting labels on chickens by color or breed. As much as I like chickens they aren't always the nice birds we want them to be. We pass along our experience for what it's worth and leave it up to the reader to decide for themselves. I was forewarned not to mix dual purpose LF with my Silkies and learned the the hard way when I had to re-home my bully LFs. I pay a lot more attention to other owners' experiences and suggestions now.
Hurray for the Brahmas! The larger docile breeds in their pullet stage are timid until they realize that size gives them an advantage!