The Scotland manager has a far, far better starting point than O'Neill has.
He can only dream of being able to leave guys like McCormack, Rhodes, Bryson, Shinnie etc out of a squad. In fact, most of them would get a start for NI.
Josh Magennis get's a regular game for god's sake.
Scotland and NI rightly have different expectations. If you think that's wrong then you are off your head.