Was it similar to this. Or have they changed their cockpit configuration.It was the last Air Show (2019) and the Sim was of the Block 70.
There is a F-21 Simulator which was not brought down here - and has yet to be made public. But a former USAF Pilot, who was the Test Pilot at Lockheed Martin showed me the Simulator on his cellphone.
He said, that LM was planning on taking it for Aero India 2020, but I suppose that never happened due to the Pandemic.
And I don't recall PAC/PAF ever brining any Simulator to any DxB Air Show in the past.