In terms of analysis of accounting documents, is that the reflection of the banker is the same as the manager of a company or external partner? Why?

NO not at all it can be different because the banker will look into it from his angel

Not necessarily, although I assume you speak of a banker/bank as a creditor? If yes, then creditors look and pay much attention to the ability of a business to generate minimum cash flows in order to meet their credit obligations ; short term profitability or financial health.

On the other hand, corporate management  uses these documents to make important LONG - term business decisions i.e. whether or not to continue or discontinue part of its business or if they can redistribute their profit in terms of dividends. Prospective investors use financial statements to perform analyses which are the key component in making investment decision.