Originally Posted by
Paul852
My guess would that at the time the Americans made their choice (maybe 25-30 years ago) the relative situation looked quite different (A scale appears to have been an outstanding package, B scale not bad).
Because of the beloved seniority system you only get to make that choice once in your career unless you're prepared to take quite a financial hit in the short term by changing later.
As a long-term American pilot at CX.....this.