I feel like DP and I do pretty good. So well, in fact, I often feel our life is too good to be true.
Then I read mumsnet and feel like the sort of person that most on here would scoff at 
But I'm happy, so who cares!
I'm average height, on just above average income, DP slightly above me (though probably in the tallest 1%, lovely man), our flat is just above average house prices.
I was about average at a very selective state grammar, and about average at a good uni. So all in all, probably about average, maybe slightly above. But probably in the top 1% happiness-wise!
I read that thread and felt absolutely no desire to be in that elite group, and I did feel it became a bit of a "my family income is more than your family income, so ner" at times.