The Difference

David Shearer asked Shane Jones, in person, to explain his actions with regard to allegations of improper behaviour.  David Shearer stood Shane Jones down pending the outcomes of an investigation.
John Key had his staff ask John Banks for an assurance he did not break the law, when allegations of improper behaviour came to light.  John Banks has refused to stand John Banks down and has challenged others to instigate an investigation.
That's a fairly clear demonstration of who has higher standards of accountability.

The Wallflowers - Bringing Down The Horse, 1996