The AMD Ryzen 9 7950X3D wins in 5 out of 14 comparable specs, with 5 ties. Its biggest advantage is L3 Cache (100% better).
Ryzen 9 9900X wins in 4 specs (MSRP: 29% better).
Recommendation
Choose Ryzen 9 7950X3D if you want the best overall performance — especially l3 cache.
Choose Ryzen 9 9900X if msrp matters more to you.
