The issue is cultural. The AR is a weapon of war, used by warriors, used by nuts in games that mimic war and killing of people. The bolt gun is stereotypical for the classic Uncle Dick in his deer stand as stated by Senator Klobuchar . The AWB doesn't affect Uncle Dick which is what the 2nd Amendment is all about. Until Uncle Dick gets on a grassy knoll with a suppressed bolt gun and picks of a crowd of innocents somewhere, they are a simple of some old harmless Fudd. That they have powerful rounds - not really relevant.
However, trying to correct folk that the 223s, 5.56s aren't that powerful as in comic descriptions of them cutting people in half, really won't move the debate. They do damage and the attempts to defend them as not so dangerous or nice guns - as in the modern sporting rifle usage, won't defend the Second Amendment. You can make Joe and Amy look stupid to us but the public won't care with cops stepping over dead kids, shot with an AR. I've said this before.
If the news said that Hale opened fire with a Kel-tec but be aware that Uncle Joe was incorrect that a 9 mm will blow your lungs out and that she was also carrying a Modern Sporting Rifle - would that make a difference?
You have a moral tribal war over gun ownership and these gotcha nuances are not important except for correcting that the civilian guns aren't fully auto. Seeing two old fudds from Guns and Ammo TV holding up a fully auto M4 vs. a semi AR that looks identical and saying please don't ban the AR because it is a sporting toy was ridiculous. Watching folks at carbine matches with ARs - they are not slow guns. Some column, somewhere recently (duh) from a guy from the NRA who became an anti spoke to the incredible rate of fire for the AR. Watching a guy do an IDPA carbine match with a bolt gun - there is a difference even though the bolt guy was good.
It's really simple concept formation about how you describe an object, there is a central usage and some peripheral characteristics. In our times, the bolt gun is for sporting Fudds and the ARs for killer nutsos.