The Aussie banks have overplayed their hand in the push back against Reserve Bank's capital proposals.

The worst thing about threatening to sell-out, if they don't get their way in this debate, is that it undermines all the good work the banks do on sponsorship and marketing to convince Kiwis how committed they are to this country.

The threats laid brutally bare just how much it's the bottom-line that really counts.

Submissions by the likes of ANZ Group chief Shayne Elliott and BNZ parent company National Australia Bank, made it clear that the fundamental basis of the relationship with