Its easy to see watching those SU-33s limp off the Admiral Kuze with a couple of AAMs, maybe something not to heavy on the center-line and very little else. Since those J-15s are nearly mirror image, with a slight weight reduction, and possibly a small thrust increase over the SU-33, you don't see them blowing off the Liaoning with a full load either!
Simple physics, lift and thrust have to overcome weight and drag?? and "everybody" plays by the same rules. "you can't fool Mother Nature!" HEH! HEH! HEH! love it, folks want to rewrite the laws of science in order to mold the facts to suit their sweet little stories??? it don't work that way??? do it???