was never a debate about which was more lethal. the point is that if you completely get rid of guns, people will then kill each other with swords. Get rid of swords people will kill each other with sticks and stones, etc.
there is no amount of laws or regulations that can contain the intent to kill.
But they can contain the destructive level of any one individual. There are generally less who wish to deal harm to others than more, but guns and other weaponry allow them to be even more destructive on their own. A man with a stick might kill one person before being stopped, a man with a sword might kill 5, a man with a gun might kill 50 and a man with the ability to launch a nuclear missile might kill 500.000 people. Scale up the weapons and eventually people start thinking "I'm not really comfortable knowing someone has that much destructive power at his fingertips" which is one of the reasons a lot of wars are waged these days, especially the ones of the developed countries against the ones who haven't got it so nice yet. It's just a matter of scaling it down and I think the end of the scale is simply whatever tool is the most destructive yet still serves a purpose. So like a chainsaw can be pretty dangerous but it still helps cut down trees so that would be okay. A gun on the other hand only has the purpose to kill, sometimes it's another human and sometimes it's an animal, the latter being something that might give guns a purpose outside of killing humans, but I'm sure a species as ingenious as ours can find some other way to keep people safe from animals in certain places, other than decking them with guns that they can use the moment they decide to go on an angry rampage.
I for one feel pretty safe knowing that if anyone is going to go on a rampage where I live it will most likely just be with a knife or something of the sort but not a gun which would bring my survivability of the situation from high to slim to none.