U.S. Bancorp (NYSE:USB) proved again in the third quarter of this year that it's one of the most profitable banks in the United States.

What allows the nation's biggest regional bank to consistently outperform its peers? You can find the answer to this question in the slideshow below, which shows how U.S. Bancorp stacks up against its primary rivals with respect to five essential measures of bank performance.

All data from the earnings releases of JPMorgan Chase, Bank of America, Citigroup, Wells Fargo, U.S. Bancorp, PNC Financial, Capital One, BB&T, SunTrust Banks, and Fifth Third Bancorp.