The comparison would be FTX where they handed the auditor a pile of Excel spreadsheets and some vague, "I thought they were in last week's email" kind of accounting.
Real banks have real controls and want to know where every fractional cent (blast, my Superman 3 scheme is foiled in the crib) is at any moment.
Every big bank[x] has to submit daily risk reports. If those reports are late by more than (IIRC) 48h, they feel the consequences. Then there are end-of-week, end-of-month, and end-of-quarter reports too.
The daily reports may take a couple of hours to run. Spread across a compute grid of few thousand cores. I work for a company that provides a quant analysis and computation platform for financial institutions. We tend to skip our weekly client-facing code promotion at the end of quarter, to make it absolutely sure that there are no unexpected changes that could mess up their gargantuan report runs.