This argument is true however the same could be said true to training for other aircraft. For example when a captain on the 73 decides to upgrade to FO on the 330.....
Stop....
If I was a 737 Capt, I would not "upgrade" to an FO position. That is a "downgrade" and a pay cut at LCC.
End of theory.
Also, the training at Republic (RPA) was the US Airways E170 training program with some alterations for RPA, i.e., checklists titles and format. They have attempted to keep it similar. Any RPA pilot would easily transition into flight training at LCC with the same type aircraft and training format. The blocks have only to be filled in to meet the FAA time requirements for the training curriculum.
T8