AX3000 support up to 160MHz channel (dunno which device can use)

AX56U support up to 80MHz

AX3000 got more bandwidth on 5ghz which is theoritical up to 2402mbps while AX56U only up to 1201mbps...

depend on your device and how much connected to devices to router...

i using ax3000 and now easily can get 800mbps for my laptop (change to wifi 6 card) and my iphone12 pro max...