It was more. In 2006 Walter Schiedel wrote an interesting working paper on Roman incomes ("New ways of studying incomes in the Roman economy") which you can find on the web. However, Schiedel's paper just scratches the surface.
When Cicero, a very frugal and honest man, ruled as governor of Cilicia, a relatively poor province, he made 2.1 million sesterces, or about 5500 ounces of gold. Today worth about $7 million USD. At this time an ordinary worker might make 10 asses a day, quite a good wage, which would come out to about $3,600 USD in modern gold terms by the same measure. This would be working "middle class" for a Roman. A poor person might have only enough to scrape by, maybe $1,000 USD a year.
Roman patricians would have dozens, if not hundreds, of servants. How many rich people do you know now who have more than 12 servants?