ARJ21 - first fly November 2008
SSJ100 - first fly May 2008
How its much later? As i said, ARJ21 - is fail project.
What embargo are you talking about? and this is why their buying our aircrafts? As example:
CityJet to Take Delivery of 15 Superjet SSJ100
C919 not even flying yet - even more, C919 - using outdated technologies in airframe construction (more weight) and engines (consume more fuel). Avionics probably standard from thales.
Meanwhile, MS-21 will get 5th generation turbofan engine and fully composite wings.
about C929 - we already have wide-body jet liners and you don't. Your market also dominated by the foreign aircrafts and i guess this is good achievement?