it has been tested
Yes, it didn't blow up.
A solid hub would also pass.

Again: except for accepting the manufacturer's word, there is NO WAY to tell if the damper is tuned to work at the specific RPM points ("harmonic orders") that are sensitive in your engine. A typical V8 has several, at least one occurs below any RPM you would use constantly, and some way above your RPM limit. A V8 crank with 400 Hz frequency (way above L6, below V6) has orders at 24,000 RPM, 12,000, 8,000, 6,000, 4,800, 4,000, 3,429, 3,000, 2,667, 2,400, 2,182, etc. but not all are equally destructive.
There is a reason why all car manufacturers make a different damper for each engine. They also make some for different applications for the same engine: the Ford 289 4 bbl. 220 hp damper will not work on a 271 hp engine since the bigger cam needs damping above the 220's damper range.
What affects damper design? It's a long list and has nothing to do with power, compression ratio, rod geo, or balance factor.
The factors that determine the natural frequency of vibration include crankshaft length (number of cylinders in a row, number of main bearings), weight, and stiffness (rod and main journal diameters, stroke length, journal overlap). The Young’s Modulus of Elasticity (stiffness) of most steel material (forged, billet) is very similar so 4130, 4340, and mild steel are almost alike - but cast iron is different.