Caporegime
Yeah that 5600X result can't be right. More likely it's the 8 core, otherwise the single CCX makes the MT score ~1k more points per core than the 5950X.
I did some maths, the 16 core Zen 3 is 33% faster in MT than the 18 core Intel
88% faster than the 10 core Intel with 60% more cores, it would be 28% faster as a 10 core, 3% faster as an 8 core so you might be right if its a few % lower clocked than the 16 core.