All nations know matter how strong they are most have a certain area they lack strength, from the start US dominated the war without leaving chances for iran without knowing at some point iran will still have something to do in the process.
Even as it is now, we won't conclude that iran have won on the war because Evan at this point the US I know most definitely do something to prove themselves to iran.
Iran may not seem to be winning this war for the moment and neither is the USA regime.
This US Trump regime will never agree to go on a talk deal with a country an enemy nation they are already winning a war over. Who does that? The greatest failure it will be for Trump regime as POTUS should he fail to win Iran in this war which never concerned him from the beginning but for illogical reasons decided to take the frontline in it. I should not be surprised. That is what bullies do.
But this time it met with a composed, strong, stubborn opponent who knows how to use it unexpected great advantage (Straits of Hormuz) through it military might to hold their ground at all cost to the frustration of the POTUS.
Neither is Israel winning the war. Technically, economically, financially, and strategically, Iran is the winning side. We don't have to argue that the US regime is partly giving up on the war ever since Trump decided to pause the war.
If we are asking who suffered more casualties, the answer will depend on the propaganda the media has spread all over the war. We would say Ira suffered more deaths and more physical damage done to their countries which may not be completely true (we believe what the media say- never). But the winner in a war is not measured by the number of casualties or death tolls. The winner is the side that, through the war, achieved the objective of embarking on the war.
The objective of the US in this war is to restrict Iran from owning a nuclear weapon and its capabilities to produce them. Another is to force Iran to agree to the US terms by first weakening its military forces and re-establishing the US military base on Iranian soil. Likely, the US has not been able to achieve any of this since the war started.
The objective of Israel is not far from what the US wants. Israel wants Iran to be weakened in nuclear production and the military. A long-time fear of military oppression around the borders they want to eradicate.
Realistically, Iran has just one sincere objective, which is to retain the Islamic Republic and prevent both Iran and Israel from achieving their own objective on their own soil. However, this war has opened their eyes to aim for more. And that would be maintaining their strong grip over the Strait of Hormuz. pooya87 will easily relate to my point.