From the story of wargame involving J-20 it seems quite usual to take out AWACS under J-10 and J-11 protection even under support of ground based asset.Even the stealthiest of fighters have limits if they get to close to radar transmitters. The Awacs forms a cluster of command and control with ground based SAM systems, conventional fourth gens, Radar sites and other assets that when networked put Fifth gen penetrating assets in a bad spot. Like trying to navigate a mine field.