You can have a rich elite and a high GDP, but that doesn't mean the common people are doing as well as the GDP suggests.
A good example of this is Ireland. It has a huge GDP. 129,132$ per capita. It's the 3rd richest country in the world if you look at it like that (Liechtenstein and Luxembourg are first and second).
But do you think the average Irishman actually makes 129,132$ per year? No. Ireland is a tax heaven and its artificially inflated by tax shenanigans from foreign multinationals.
There are other reasons why absolute GPD is bullshit. Even PPP GDP is a little bullshit.