IS MIG CORP BEHIND CHINESE J 20 DESIGN AND DEVELOPMENT ?

1. Like most of the new gen aircrafts countries usually test its avonics ,engine and other new features in current generation or technology demonstrator    (TD),but in this case chinese did nothing to demonstrate its tech.
2. Chinese still struggling for new modern engine till now even there WA-10 is still in testing phase then where they get the engine to support there J 20 unless they put Russian power plant ,they can't test an aircraft as big as J 20.
3. Chinese still no where in frame in developing 4.5gen aircraft till now . J 10 B is still a 4th gen aircraft without any question.
4. MIG jobless scientist and workers are desperate to work as MIG RAC CORP business is at all time low with few oversea order ,they can work for anyone who got money in the back and in this case Chinese got that .There is no secret that russian scientist works for much of chinese development in HQ-9 LRSAM (RUSSIAN S 300 VERSION )
5. SOME FOOD FOR THOUGHT - IMAGE COMPARSION