I thought this might be one of those "how many chickens does it take to change a light bulb" type of jokes.
I am not a chicken expert, but one thing I've noticed about my little flock (8 adults and now 2 juveniles is that other than an occasional peck on the head of the 2 new girls, there doesn't seem to be a lot of pecking, feather pulling etc. I'm thinking it might be because I have a spacious coop and an even more spacious run, plus they usually get out to free range for an hour or so a day. There is room for the lower ranked flock members to get out of the way of the higher ranked flock members with out getting abused. In fact, other than the new girls, who are most definately at the bottom of the pecking order. I may be able to guess at top chicken, but I wouldn't be able to rank them based on feather loss or anything else.
On the other hand, if you live in a cold climate, a cozy coop will be easier for the chicken's body heat to keep warm, so you don't want it to be too big for your flock (not a problem I think in a more temperate climate)