China J-13 and J-14 ... uh ... I dont know about you but I have no faith in China aerospace industry whatsoever ... because look ... after so many years they are still not able to produce fighter or engine on their own .. all of its military fleet are copy-paste or done with the help ... so no points for them ....
J-11B is no where near Su-35BM and with two uncertan programs I see them as big buyers of Russian equipment once more since they did not menaged to produce quality product on their own no matter its politics not to rely on Russia again .... more to it because of its copy-paste policy and industrial espionase no nation Russia or Western want to have any kind of deal with them and they are failing behing ... so just to keep up they will need to buy ...
From this it doesn't sound like you know Chinese military well, but are just stereotyping and country bashing China. How do you know for certain that J-11B is no where near Su-35 technology level or capability? China hasn't released any information about it. Remember Western propaganda keep saying how Soviet Union had backward technology and were no where near American technology level. Yet Soviet Union went toe-to-toe in reality.
Copy and paste policy really? Maybe thats what you think but lets gets some facts. J-10 initial canards idea and design J-9 started in the 1970's out dating Lavi. Using another countries powerplant doesn't make the J-10 not domestic. Eurofighter uses AIM-120 so it means its an European-American design then? JH-7A domestic, J-10 overall domestic but some gaps filled in with Russian & Israeli help or pointers. J-11 its license production of Su-27, China never said J-11B is there own design, they admit to using Su-27 but with domestic systems and weapons, so China altering an Russian license production fighter is considered copy? Even if its license production, but with Chinese input?
Need to buy? Russian shopping spree on fighters? If you haven't notice Russian-Chinese military purchasing is dropping every year. Its getting less each year. If they need shopping for fighters then why hasn't China had follow on orders with Su-30MKK3? Or Mig-29, Mig-35, Su-34 then? Why do they mass produce J-10 and JH-7A, right they know their fighters are inadequate yet they still produce them. Western nations? Why dont you say White people technology then? Im sick of people saying Western technology, it makes me laugh, its takes the whole Europe, America, Canada, Australia to make it superior to China and Russia?
M1 Abraham to be off topic uses German Cannon, and British Chobham armour, so using these parts considers it to be a German, British design then? and not american?
Off topic but had to clear some bias and lack of facts and information.