There is also "pride" as a moral code, where appearances of military superiority are what matters. At the start of the conflict the US and Israel appeared 100% invincible, and now they appear ... 99.9% invincible. So ... "victory for Iran" ... I guess.
In reality, of course, in response to "Israeli agression", Iran has severely damaged literally everyone who might have been on their side, with near-zero damage to Israel and US, while their own forces are dying in large numbers, while boasting of it. What an achievement! But that's where appearances matter. If they boast of it enough, maybe they can convince enough people ...