“12% p.a.” means five different things depending on how often it compounds. Enter a rate and what it is, and get every other version of the same rate — the one comparison banks hope you won't make.
All rows start from the same effective annual rate, so the amounts are identical — that is the point. A 12% monthly-compounded deposit and a 12.68% annually-compounded one are the same deal. Differences only appear when the quoted number is the same but the compounding is not.