According to many resources, Return on Assets (ROA) is one of the best ways to evaluate profitability of a bank. %Pre-tax Profit on Sales is less useful when evaluating a bank, so I would suggest replacing that line with ROA for banks.

The calculation is done in one of 2 ways:
Return on Total Assets (ROTA) = CY Net Profit / CY Total Assets
Return on Average Assets (ROAA) = CY Net Profit / ((CY Total Assets + PY Total Assets)/2)

Where CY = current year; PY = previous year

Both are used. ROTA would result in a more conservative (lower) number than ROAA for a high quality bank that was growing assets year-over-year. ROTA is what Value Line reports for bank stocks.

I would recommend that we use ROTA as this is a simpler calculation. Like Profit margin (and ROE), consistency is important for ROA. Also like ROE, a value of 1.2% or higher is cited as a benchmark to identify a high-quality bank.