The MSI MAG B860 TOMAHAWK WIFI wins in 5 out of 14 comparable specs, with 5 ties. Its biggest advantage is PCIe x1 Slots (100% better).
Z790 AORUS ELITE AX wins in 4 specs (SATA Ports: 50% better).
Recommendation
Choose MAG B860 TOMAHAWK WIFI if you want the best overall performance — especially pcie x1 slots.
Choose Z790 AORUS ELITE AX if sata ports matters more to you.
