Actually, I don't think that all sedans were Ferios. Asiandoood could clear this up, but I believe in the 5th gens only the VTi and SiR were Ferios (sedan of course), and the 6th gen was the RS Ferio. Not sure which model in the 7th gen was a Ferio.

I don't think that ALL JDM sedans are Ferios, but again, I'm not 100% sure.