You’re comparing a 4 year bloodbath to 10 minutes and being underimpressed? Also those weapons are several orders of magnitude less powerful than what they’re capable of today…

Battle of Carthage was also 3 years and was a siege of a city, so you know… not a lot of places for the people inside to escape. Also took about 20-50k expertly trained Roman soldiers vs a few trained guys in a plane pressing a button.

And sibling comment is right. The application of industrialization to the death process in WW2 and similar application of the idea (eg Pol Pot and Stalin) also led to death on an unprecedented scale.