AC also can't run from Navy fighter, as long not deep talk to fighter will be fine, just talks related with AC,
Su-57 maker said Su-57 can be carrier fighter if there is required by any navy. 003 to run Su-57 should be no issue.
what i is means combat trainer , like internal Su-57 vs J-20/J-35...
Technically no issue used WS-19 for JF-17, just mainly on PAF already have maintenance team & parts, also experience with RD-93 for currently JF-17, is unlikely switch to WS-13/WS-19 engine due need setup extra team to maintenance different plane/engine.
WS-13E used in FC-31 v2 testing. seems...
any possible PLAAF getting SU-57 for 003, since J-15 outdated for future combat (no stealth capability) facing F35, etc.. plus alot enthusiast said China like heavy and big fighter ...
su-57 also can be trainer for J-20/J-31