EMBRAER has ONLY delivered the 1800th E Jet whereas COMAC C-919 has thousands & thousands of orders - all within China.
Result :-
COMAC - 1
EMBRAER - 0.
there is something important to say.
Leap engine is the most important aspect why C919 can not compete with B-737Max or A-320Neo.
Leap 1A powers A-320Neo, this engine is more powerful than the Leap 1C that powers C919 but allows A-320 more than 1000km more range.
B-737 is powered by Leap 1B a less powerful engine than the one powering A-320 but allows a heavier B-737 Max than C919 more range than C-919
What does it say?
By passenger seat C-919 spends more fuel per kilometer travelled.
That means it is less efficient.
Add production numbers.
A-320 is delivered almost 1-2 a day.
C919 can not do that in fact Boeings problems are not even giving advantages to C919.
COMAC claims a lot of orders in reality they are not real orders, first the pace of delivery is too slow, which means low profitability, because COMAC buys COMAC aircraft via Air China, China Southern, and all the COMAC owned airliners, well CCP
Why the low profitability?
answer with 20000+ deliveries by both A-320 and B-737 the R&D is paid so profitbility is higher than C919.
C919 has not paid R&D so profitability is very very low, very likely none.
Add COMAC buys COMAC means buying C919 is debt, not profit.
C919 has not even gotten profits and C929 is in hoax design phase.
The reality is COMAC is behind Bombardier and Embraer because profitability now is none.