I earn a labout 3k more than my brother and my sister earns a lot less but gets a rent & council tax free two bed house with it, so I would say we all earn about the same.
I met my parents for coffee this morning and I mentioned an expensive picture that I had seen that I would really like to buy, parents gave me a lecture about looking after money a the moment and I agree it sadley probably is better that I don't buy it at the moment. My Dad then goes on to talk about all the wonderful new stuff and treats my brother has brought himself and his girlfriend for Christmas, I say how come you haven't told him to look after his money? Brother has a mortgage, lives by himself and works in sales. They said because he didn't have the responsibilty I did (i.e. small child) and because he earned such a fantastic wage, after then another 5 minute of how hard brother works at his fantastic job I said actually I earn more than that by about 3k and I work for a charity(so paid about 10% than other sectors) at which point my Dad nearly fell off his chair, I think he would of had a heart attack if had added "H earns about 7k more than little brother". I'm actually half angry with him for undermining my job so much and the other half of me is feeling a bit smug.
My brother shows off with his money and is flash with cash I'm sure he thinks he is part of the aristocracy, my sister and I have money but don't show off and live very normal lives with very normal people. How does what you earn affect the dynamics of your family? Clearly my parents had decided my brother was the big success in the work place.