Outside of maybe China and Russia, which Country can you name that can go toe to toe with the USAF and IAF combined?
Please remember that US/Isr heavily rely on refuelers,Air borne front end aircrafts for intelligence gathering like P8 Poseidon,MQ9, etc, naval destroyer warships for opening strikes to soft the targets.
These are big @ss targets and any military with sizeable submarine force (like India, Pakistan , etc) , 4.5th Gen Air borne Fighter Aircrafts (again like South Asia) and decent SAM network (like that of India) should be able to give a bloody nose to US/Isr Air Forces.
America is fighting an easy war with Iran because Iran has literally One dimensional military force
Or i should say it has no military force just a missile force.
Imagine a war with a country having a great submarine force , 4.5th Gen Air Force with highly mobile air borne surveillance assets, Integrated Air Defences on ground, ballistic & cruise missile fire power, and at the back of it, the nukes for doomsday.
Multiple nations have these assets well in place.US is not fighting with Iran.Its just a target practice for them.