If the population of Gaza was 4mm instead of 2mm would you expect more or less civilians being killed?
Maybe you feel it would be the same?
Given no other information, such as population density, location of enemy combatants or installations in relation to urban areas or population density, ratio of combatants to civilians, severutybof fighting, and others, I'd expect countries with greater civilians populations to have higher civilian casualties.
That said, we both know that means nothing without the other variables. Most countries do not have military installations in or near major urban areas. They also don't embed fighters within the civilian population, and even when fighting in urban environments, usually avoid sensitive civilian areas such as schools, hospitals, and places of worship, where there will be higher concentrations of civilians seeking shelter. It goes without saying that they definitely don't install most of their military infrastructure underneath their most populated cities.
If one can agree to these basic assumptions, then one can agree that any number of civilian casualty ratios which is anywhere close to "normal" combat circumstances is a a huge deal. One would assume that the above circumstances would present civilian death ratios which should dwarf historical combat civilian death ratios.