Rolls Royce only needed bailing out after the RB211 - I am not sure why that engine was so difficult and costly to develop, something to do with the customer (Lockheed - for the Tri-Star I believe) changing specifications. I am not sure that RR's Marine and Industrial divisions are more profitable than Commercial Aviation and Military Aviation. Is there any information on their website? All four divisions use much of the same technology.If you think Rolls-Royce are the best aero engine builders going and Chinese engine builders are shit, then you are wrong on both counts. Rolls-Royce have a long history of having it's aero engine division bailed out; they have always made more money from industrial and marine versions of the aero engines. The Chinese aircraft and engines operated by air arms like the Pakistanis were found to be more accurately built and lasted longer than their original Russian equivalents. China can churn out shit all day but it can also make precision equipment as good as anyone.
As for Chinese versus Russian engines and aircraft - are you saying Russian build quality is poor or that Chinese quality is particularly good? Do either of them really do things such as ISO 9001 or AS 9100? I can think of companies that outsource manufacturing to China, but only the higher volume, less high specification stuff.