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Bank valuation is a different animal.  Banks trade at multiples to Book and Tangible Book, and the value of that premium/discount is often a function of things like regulatory capital, market demographics and capital structure.
My advice would be don’t get caught trying to treat a bank like an industrial.  At this point in the cycle, earnings still mean less than book value.  Growth premiums come from those banks which are able to organically grow commercial loans.  Regarding your question on income, all three can be relevant and the most relevant depends on company structure. The comprehensive income for banks takes their AFS portfolios into account – it they are still having issues with marking Trust Preferreds, for example, that will show up in OCI.