The Iranian Air Force is one of the few air forces with battle-hardened veterans who actually participated in air-to-air combat... and the only one which did it succesfully for 8 years against an internationally pumped up Iraq... with increasing material and logistical difficulties.
The Gulf Arab “militaries” are mercenary forces consisting of South Asian slaves. The Arabs actually don’t lift a finger.
Odds are that if the shit hits the fan, the Arabs will ask us to fight for them. They will foot the bill at best.
Buying modern toys isn’t enough.
The UAEAF pilots are trained by the United States (same country who supplied the F-16 Desert Falcons). I bet my 2 cents that they would prevail over their Iranian counterparts in A2A combat.