To keep it in perspective
Discussions on the CS by CityJet were only to get a better deal from SSJ. SSJ100 and CS100 are not the same aircraft at all! Just below than 100 seats (98) for the SSJ and more than 130 for the CS100. And around 10 tons more MTOW for the CS100, range of the CS100 is double than for the SSJ. To make it short, the SSJ is a regional aircraft - and CityJet a regional carrier - and the CS is a narrowbody whose competitors are B737 and A320 families.