Please note 2 things.
(1) Russian Air Force did this job against a non-existent Air Defence System.
(2) But in case of Iran, it has to face US and it's allies, who all have much advanced Air Defence Systems as compared to Iran.
In this situation Iranian Fighter Jets have absolutely no chance.
So, the condition applies here is this: "If even the Iranian air defence systems are able to hit F-16s and F-15s and F-35s of the opponents, then the opponents also have absolutely no chance against Iran and their Air Force also becomes useless.
You think Iran is going to use it's Air Force for it's initial retaliation against any attack? LOL!
Yea that's why Iran's built over 40 "Large" Ballistic Missile bases not to mention the small bases or the cruise missile bases,.....
Iran's Ballistic Missile, Cruise Missile & UAV capabilities are nothing compared to what it was in 2002 & the U.S. got it's answer using it's own simulation of "KNOWN" Iranian weapons in it's Millennial challenge 2002!
At that time Iran's cruise missiles had a max range of 400km, Iran's Fatteh-110 had a CEP of ~500meters, Iran had just started producing 50 Shahab-3's per year at a max range of 1,300km (Which was the longest range BM Iran had) the most advanced Iranian UAV was 250km Mohajer UAV
In a war with Iran Saudi Arabia would have to park it's Air Force at least 600km from Iranian Territory! Right now they need U.S. logistical support to bomb a country right off their own boarder & still they can't stop them from firing Missies at them!
Yes, the Saudi's would have absolute Air Superiority if Iran was going to use it's Air Force but based on Iran's weapons production and acquisition any Idiot can see that Iran has shown no interest in taking that route!
Even if Iran buy's 100 Su-30's in the next 10 years those fighters will mainly be for Air Defense operations over Iranian territory!
Iran's initial response will be with ~1000 missiles in the 1st day & Iran produces a large variety of missiles and they can probably maintain a 200 missile monthly attack using it's current production capacity & stockpile of 1000's of missiles in storage!
with 1000 missiles even if 80% fail to reach target or get intercepted and that's an extremely optimistic figure!!
a more realistic figure would be ~35% success rate for Iran at the start & that number slowly increases as Iran makes adjustments to it's missiles & Saudi Air Defense gets damaged or depleted)
so that's at the very least 200-350 hits out of 1000
That's:
20-35 missiles on major Saudi Oil infrastructure!
20-35 missiles on Saudi Power Plants
20-35 Missiles on Saudi Ports & naval bases
20-35 Missiles on Major Saudi Radars & Air Defense
20-35 missiles on major Saudi command and control & communication infrastructure
20-35 missiles on Saudi Royal family & it's assets
20-35 missiles on Saudi Depot & other critical financial infrastructure
20-35 missiles on Saudi Army Bases, Missile Facilities,...
40-70 missiles on Saudi Air Force Bases (within 800km of Iranian Airspace)
And that's just with 1000 Iranian missiles which is NOTHING compared to Iran's overall stockpile!
In the past 20 years Iran's produced Fatteh-110, Fatteh-313, Zolfaghar, Sejil-2, Shahab-2, Shahab-3, Qiam-1, Ghadr-H, Ghadr-F, Emad-1, Soumar, Ya-Ali missiles. All of which are capable of reaching various targets in Saudi Arabia & 100 of each is really nothing for Iran!
And that's not including Iranian Anti-ship Missile or Air Launched cruise missiles or new missiles like the Khorramshar & other missiles Iran has not made public or unguided rockets like the Zelzal....
To top that off Iranian UAV's & UCAV's will likely go after soft targets like Oil rigs, Factories,....