Comparisons between Noct AST and SCH are inevitable since it's obvious 2.0 SCH was used as a base reference when creating the Sect. Same way with Diurnal and WHM, but the latter plays more to AST's strengths and overall toolkit better.

I mentioned in another thread how Noct could be changed to be a reversal of Emergency Tactics. Imagine if ET was an actual stance SCH was locked into for a whole fight, and that's how I see Nocturnal. An ability that would work well in situational circumstances but not as an 'always on' move that fits as part of the job's overall package (since the other jobs do that role better)