So why didn’t Mr Quadrio merely assert that he’d never flown the helicopter the subject of the video, or had never flown a helicopter in the manner suggested by the video?
Answer: Because he’s honest.
The ‘you can’t prove it was him’ line is therefore interesting but irrelevant.
The important analysis is the analysis that seems to show that the video provides an exaggerated and therefore misleading impression of the extent of the angles of bank, and also seems to show a flock of birds. It is very unfortunate for Mr Quadrio that that analysis was conducted after, rather than before or during, the AAT hearing.