One of the main reasons of such results is in the planning. YuAF Fulcrum pilots, i suppose same can be said for Ser bian pilots never trained or planned such scenarios where enemy Awacs sees better areal picture than Gci radars located few miles from battlefield. Lack of spares, sticktime and tactics sure helped a lot. Most of the Allied pilots had more stick time per person tha n all of the Fulcrum pilots together.
I was away from FC And DCS for 9 or 10 months and man it took me two or three weeks to get back into button mappings of my HOTAS.