Par4QC With those figures, those clubheads would be non-conforming.
If the moment of inertia of the clubhead about its centre of mass exceeds 5,900 g-cm² plus a
test tolerance, the clubhead does not conform to the Equipment Rules, Part 2, Section 4b (i
That's where the two MOI measurements come in. They're using a different way to measure MOI than the "old" way that got heads to 5000MOI.
Edit: Found it, that 10,000 MOI is a combination of side to side and up and down MOI measurements:
Ping say that their G400 Max driver has a combined (heel-to-toe, top-to-bottom) MOI of 9,902 g/cm² – the highest on the market at the time of its release.
There are actually multiple "moments of inertia" that can be measured on a golf club. But the one that companies tout in advertising and that golfers read about in golf magazines and websites has to do with the clubhead, its center of gravity location, and a vertical line we can imagine running through that CG location.
https://www.liveabout.com/moment-of-inertia-moi-in-golf-1563333