User blog comment:B214/Volume 23 discussion blog/@comment-31137559-20170412001730/@comment-10330822-20170413214842

The fact that Twice Critical is a common Sacred Gear is also probably a factor.

Besides, what I remember then saying about the insititution was that they gathered the seperate bloodlines together to form the ultimate Siegfied descendant, and Lint is made from the same genetic structure as Freed.

In other words, they aren't exactly clones, like B214 said, they are test tube babies. Think "Logan" is you saw it.

In short, although they are artifically crafted, they are still "real', just as real as a normal human. So them having Sacred Gears isn't odd, especially if its just a common one.