It would be a massive win, and put into question the effectiveness of the F-35. It would also put into question the safety and skill of Israeli fighter pilots.
Honestly, this entire situation just annoys the shit out of me. If Iran has a proper airforce, Israel wouldn't have been able to do even a 10th of the damage it has been able to inflict.
Iran's old man leadership should be replaced, because they're all a bunch of incompetent old men, fighting a war as if they're still facing Iraq in the 1980s.