McCormack is just another politician by comparison
By comparison to what Frank?
McCormack proved himself to be totally useless in his previous portfolio, so I'd hold absolutely no hope whatsoever he is going to perform any differently in his new role.
In fact, it's probably going to be a race to the bottom with McCormack when his competence (or otherwise) is compared to previous NP leaders, eg., Anderson, or Truss.
As for 'duchessing' LB, I suspect that the one who
has been duchessed at this stage is actually McCormack, and that all the candidate you refer to is going to have to take care of is to keep on asking McCormack to provide tangible proof of his political accomplishments so far as they relate to the aviation aspects of his portfolio.
Because from the article Dick refers to, it's only going to take about 5/8ths of the sqrt of F.A of a poofteenth of a millisecond to elaborate on them from what I can see.