The ASRock Z890 Taichi wins in 8 out of 14 comparable specs, with 4 ties. Its biggest advantage is USB Type-C (200% better).
B860M AORUS ELITE WIFI wins in 2 specs (PCIe x1 Slots: 100% better).
Recommendation
Choose Z890 Taichi if you want the best overall performance — especially usb type-c.
Choose B860M AORUS ELITE WIFI if pcie x1 slots matters more to you.
