Are ya‘ll really measuring airline performance based on the ability to not crash. Is a post solo student as capable as a CFI because they both don’t have a crash under their belt? If a crash is a really a series of events that were chained together on one trip wouldn’t you want to determine how frequent these same events occurred separately not causing a crash. Would you not also want to measure go-arounds caused by pilot error or runway incursions, or 360 on final for energy mgmt.
There are two different points being made here:
1 The mainline/regional equipment is harder/easier to fly.
Well, mainline pilots are managing more energy
2 The overall operations are equal
Mainline generates the standard and regional matches it. I.e. United introduced CRM as a result of a crash. Colgan merged, went out of business, and washed its name as a result of a crash.