I think that because:
1. Israel commonly assassinates Iranians both inside and outside of Iran. This is not true between Russia and Ukraine.
And Iran commonly fires on Israeli targets in a daily basis.
To invoke my analogy again, if Ukraine was on a daily basis through RDK hitting Russian settlements and killing Russian soldiers, would you be OK with Russia just "commonly" (i.e. 1 time a year?) assassinates Ukrainians inside and outside Ukraine?
2. Iran does not have active nuclear weapons while Israel does. This is the opposite for Russia and Ukraine.
3. The very fact that Iran doesn't dare fight Israel despite all its provovations while Russia has invaded Ukraine for much less and captured huge chunks of it, never to be returned, shows a different power dynamic.
That wasn't what I asked you, I just used the example of Ukraine = Iran and Russia = Israel as 2 random countries. My point is that a country that can't beat proxy armies and has only carried out some dubious terror attacks on the core territory of their enemy is simply in an awful position when their enemy is hitting their cities, creating refugees and killing 10 000s of soldiers.
4. Russia's history in war is that it starts off sluggish then becomes indomitable while Iran has no such history.
You mean Israel doesn't have such history? Or maybe that Israel does? Because that was the whole analogy. Anyways I can give you that point, but I don't think the idea that Israel starts off sluggish and then become indomitable compensates enough for the fact they have essentially inflicted maybe a dozen casualties on IRGC (let alone Iran regular military and civilians), while they've lost 10 000s and are evacuating cities.
I used this analogy to show you that if not for people reading very propagandized sources, how absurd the assertion is when applied to any other conflict.
If you want an example closer to home: let me ask you, would you be satisfied with a crackdown on Taiwan where we lose 10 000 PLA for 30 000 partisans on Matsu and Kinmen, bomb the shit out of these 2 areas continously but leave the Formosa island untouched, blow up a few pagers in Kinmen, and plant a few bombs on the main island to kill some partisan liasons? Not even daring to use the PLAAF to directly airstrike Formosa. Not satisfied right? That's why Israel is also not satisfied and want US bailout at any cost.