Firstly, there's the A320NEO and Boeing 737MAX whose range of family allow airlines to maximize operating costs without needing to add a new aircraft type. It might make sense to buy the CSeries if the airline's suitably large enough that the cost from operating two families of aircraft are offset by efficiencies. Secondly, the CSeries is unproven, and airlines don't want to commit until they have performance guarantees. And it has been insinuated that Bombardier's sales team aren't exactly stellar.Why so slow sales for C series?
Sukhoi is having financial issues and I heard the reliability of the Superjet isn't good at all. Aeroflot will sell their first 10 aircraft back to Sukhoi.Sukhoi Superjet
The ARJ21 is a bit smaller and the C919 EIS is delayed to 2017 at least. And:Comac ARJ21 & C919
Indeed. Somehow I doubt Comac will gain much more market share outside China.all of which have more orders then the C Series
Thats not exactly the case with SSJ, Aeroflot simply made an agreement to replace the first 10 planes, as they were early builts, with ten of the "normal" version of the aircraft. 787 early planes were not performing great eiether, happens with new airplanes. Which means that Aeroflot will receive normally the 30 SSJ.Sukhoi is having financial issues and I heard the reliability of the Superjet isn't good at all. Aeroflot will sell their first 10 aircraft back to Sukhoi.