All very true 777AV8R, however in many larger multi-fleet companies, the DirOps, system Chief Pilot, DirTraining etc....
will at some stage come to the conclusion that all fleets should be "standarized", ie: common operating procedures for all types, whether in makes sense or not.
Have seen this happen many times, and the results are generally not good.
At one SE Asian company where I worked a long time ago, they had what I thought was a very good policy at the time. The largest fleet was the Boeing 707, and the company took the Boeing manual/checklists/procedures and simply printed their logo on the cover and said....do it this way please.
Worked like a charm.