In neer peer conflict air supremacy is probably pipe dream because of combination of ground based anti aircraft systems and inability to take out airports for more than 1-2 hours without using tactical nukes. Tor/S300/S400 and western/Chinese alternatives are highly effective, mobile and hard to detect - you can never take out all of them. AWACS are big, expensive and slow targets so they will have limited utility in a conflict - so limited visibility on what's in the air.
Go low - you will get MANPAD. Go medium - Pantsir will get you. High - S300. Not everytime but often enough that all sorties will have to be very quick with no loitering and unpredictable flight paths (so no CAS).
Drone loitering seems to work really well. We call army units on boats marines. What do we call army units that provide their own air cover? Aerials?
The combat footage out of Ukraine is very enlightening. Communication, drone surveillance, full stomachs and no booze is apparently how you win a land war in Asia.
Yeah good luck getting any long lasting air superiority if you have S400s less than 100-200 miles around. And there are newer models in the pipeline with better reach, although they may be as useful in this decade as Armata.
Go low - you will get MANPAD. Go medium - Pantsir will get you. High - S300. Not everytime but often enough that all sorties will have to be very quick with no loitering and unpredictable flight paths (so no CAS).