Did Hamas invade the USA? We are talking about the mathematical comparison that Bibi brought up. If you want to make the level of Israeli deaths "real" for a US audience who suck at numbers, then you should make the deaths caused by the Israeli response "real" in the same way.
Really, because it's pretty easy to answer for most people who don't think that the Palestinian/Israeli conflict only started on the 7th October. Oppress and dispossess a people for decades and then act all shocked when those people act out in extreme ways.
A proportional response would not have killed tens of thousands of civilians or destroyed over 80% of civilian buildings in Gaza.
Here is a good article that lists why so many people consider the response to be way beyond proportional.
https://www.bbc.com/news/articles/cr5r76e127do