The borrowed meaning
On the ordinary web a mirror is a second machine holding the same files. The relationship between the original and the mirror is a fact about infrastructure, and you can often check it, because the same organisation publishes both under the same name and the connection is visible in the certificate.
None of that transfers. When somebody publishes a TorZon mirror they are publishing a second 56 character string, which is a second key. There is no shared name to bind them, no certificate authority to attest to the relationship, and nothing in either string that references the other.
What a mirror list is actually claiming
A list of twelve addresses is a claim by whoever published the list that those twelve belong together. That is a claim about the publisher, not about the strings. If you trust the publisher the list means something. If you do not, the list is twelve arbitrary strings, and no amount of examining the characters will change that.
This site is very clear about which side of the line it sits on. It received twelve strings and it computes properties of them. It cannot establish that they belong together and it does not claim to. What it can do is show you that they behave like independently generated addresses rather than like variations on a theme, which is what the shared prefix analysis is for.
That analysis found the longest agreement between any two of the twelve to be 1 character, across all 66 possible pairs. If somebody had built lookalikes by grinding for similar openings, that number would be larger. It being tiny is consistent with twelve unrelated keys, which is what you would want from a genuine set. It is evidence about the shape of the set. It is not proof of anything about who published it.
Why none of them is called the mirror
Sites that publish these lists usually rank them. One gets called the main address and the rest get called mirrors, sometimes with numbers. That ordering has to come from somewhere, and on most such sites it comes from nowhere in particular.
The ranking is not harmless. It teaches readers that the top entry is the real one and the others are fallbacks, which means an attacker who wants their address believed only has to get it printed at the top of somebody's list. A flat list has no top to capture.
So this site prints the twelve in a fixed order and refuses to call any of them primary, main or backup. The order exists so the page is stable between visits. It is not a preference and nothing on the site treats it as one.
That also changes what the phrase TorZon market mirrors can honestly mean here. It does not mean twelve copies of one thing, and it does not mean eleven spares behind a favourite. It means twelve published strings sitting on the same footing, each with its own record page, and none of them carrying a claim this site cannot support.
Questions
Do all twelve TorZon mirrors lead to the same place?
This site cannot determine that. Each address is a separate key and nothing in the strings connects them. They were published together, which is a claim by the publisher rather than a property of the addresses.
Is a mirror less safe than the main address?
There is no main address here. All twelve are published on the same footing and none of them carries any property that would make it safer or less safe than the others.