That's a fair point but to be clear, I'm not trying to have it both ways. I personally think incendiary bombing was more destructive than atomic bombs, even when comparing individual conventional raids to A-bomb. You can see this in after action reports for various cities. For example, firebombing of Tokyo completely destroyed 16 square miles of the city in 1 night raid. The A-bomb destruction in Hiroshima was a radius of 1 mile from epicenter, so just over 3 square miles. A lot of its destructive power was wasted because it "bounced rubble".
But the popular notion is that A-bombs were some sort of super destructive weapon because most people dont have the knowledge of the various incendiary bombings by USAF to put Hiroshima/Nagasaki in context. Its not me they have to convince, its the majority who go "muh atomic bomb! so terrible!" which is their primary constituency, especially in Japan. They will never tell them that what this majority sees as a US overkill at best and a war crime at worst, might have been unnecessary.