This picture is often used to draw out all the points you've made, to demonstrate that many people are unfamiliar with many firearms. The Mini-14 in this picture is one available configuration of the rifle. The most basic, simple, low capacity version. However, the Mini-14 is fully capable of using 20 and 30 round magazines, a pistol grip, suppressor, bayonet, and even a folding stock (which the AR-15 can't do).

A better version of this picture uses two models of the Mini-14, illustrating how one is legal in California and the other isn't, even though they're functionally the same rifle. A firearm simply being black does not make it more dangerous. A pistol grip does not make it more dangerous or easier to hip fire for that matter. Any gun is easily hip fired, and I would suggest a non pistol grip rifle or shot gun is more ergonomic to fire from the hip as far as pulling the trigger is concerned.

The real argument should be whether semi auto rifles are more dangerous or not, not if specific semi auto rifles are more dangerous.

How is being less visible at night not make a black gun more dangerous than one with a bright wooden sheen?

You're right. We should regulate black paint just in case someone decides to turn their legitimate wooden rifle into a war machine.

Agreed, that image is misleading.

Your image is confusing. How does a the rifle with no magazine have the same capacity to rapid fire as the one above it? The Ar-15 appears to have more bullets immediately available, which would mean it would fire them faster.

The magazine isn't in the second picture but it has one. Looks like a Ruger 5816 to me, so if you want to see what it looks like with the magazine in it, check out their webpage. Funny enough, it looks like a 10 round mag in the AR, and the 5816 comes with a 20.

How is having a pistol grip that improves comfort and hip firing not make the weapon easier and more comfortable to use?

You're talking about personal preferences here. I tend to find them both pretty comfortable, but you really want to keep the stock at your shoulder.

How is being less visible at night not make a black gun more dangerous than one with a bright wooden sheen?

One of them is black metal, the other one is wood. Either could be painted if you wanted to I suppose, but if we're talking about night-time scenarios, using a light would make either relatively visible.

Do both guns have the same exact default trigger pull, or is the ar-15’s lighter and easier to fire?

You could probably answer these questions in less time than it took you to write them out by looking them up. The 5816 has a pull of 13.50" the base model ruger AR (8500) is 10.25" - 13.50".

These guns are different enough in actual use to make one more dangerous than the other. They both can kill you dead, but one literally is designed specifically to be deadiler in several ways. It’s one of the reasons mass murders keep using it specifically to mas murder people.

Clearly this is bullshit.

These guns are different enough in actual use to make one more dangerous than the other. They both can kill you dead, but one literally is designed specifically to be deadiler in several ways. It's one of the reasons mass murders keep using it specifically to mas murder people.

Others have already explained how they're both equally lethal, but to your point about mass murderers using the one over the other: The top rifle can be had for ~$400 & looks like the one all the soldiers and video game guys use. The bottom is closer to $1000 and does not look as cool (to the young adult male demographic that commits most mass shootings, at least). I would argue those two factors account more for their difference in mass shooting use than anything else.