What was the typical job? What was life expectancy? How warm was a typical home in the winter? How many books did an average person see (much less, read) in the lives? What was travel like?
Also wealth disparity is a stupid metric. If you and I are homeless under the bridge, it does me no good that we are equal. If I have a house and you have an even nicer house, I am fine. (though I'd rather have the nicer house)