Solinco Outlast & relationship between tension loss and gauge

Does anyone know if there is an accepted relationship between tension loss and gauge?

To me, it makes sense, when comparing the same line of string from the same manufacturer, thinner gauges should have less stiffness and higher tension loss. Thus, thicker gauges of the same line should be stiffer with a lower tension loss.

If we look at the Solinco Outlast line (there are 4 tested gauges on the TW database -- 16, 16L, 17, and 18). As the gauge goes up (i.e. thinner strings), the stiffness generally goes down from 208 to 180s. But the tension loss is hopping around from the mid 20s to 50. Why is that? Data from TW database below

16 (1.30) = 208 stiffness and 47.3% tension loss
16L (1.25) = 208 stiffness and 28.8% tension loss
17 (1.20) = 182.9 stiffness and 50.4% tension loss
18 (1.15) = 186.3 stiffness and 26.9% tension loss
I use the 17 and while I haven’t measured the tension loss, it doesn’t feel anywhere near 50%.

It’s a pretty dead string to begin with. It does loosen up a bit during the first hit, but after that the loss is incremental over time.
Most of us, string their poly much to tight, do tension loss is actually a good thing.
I believe TWU test tension loss by repeated hamering with a hamer. This is not realistic and probably exarating the loss of tension.
Also the measured stiffness is not always inline with my experience. I find the thinner 1.15 Outlast much stiffer than the 1.20 version. According to the TWU data, the 1.20 gauge Cyber flash should be very supple, but it feels to me much stiffer once strung.
So i think the data doesnt always correlate with reality.
I have to say Outlast is the most underrated string on the market. It gets virtually no kudos yet it has more access to spin than Tour Bite (try it if you don't believe me).