I wouldnt get too excited about this. If there is one question anybody in the 1% is ready to defend at any time, any condition for any reason - its justify their pay and/or the disparity between their pay and their employees. The uhs and ums in the transcript make it look like he was taken aback but if you listen to it he is just explaining. You never realize how much you use verbal pauses (uh, um, ehh) until you are friends with a speech pathologist.

This is not the first time a CEO has been asked to defend their pay or the pay of their employees.