Carl,
The spec chart you provide a link for is nice and clear. It says the AX3000 and AX55 are different products, with different antenna arrays, different wi-fi speeds, different parental controls, etc. That's all nice and clear and would be helpful in deciding which to purchase.
The problem I have is that the packaging box in my hand says at the top AX3000, and below that AX55.
Furthermore, when I open the web interface to configure the thing, and figure out what I have, at the very top of the user interface it says AX3000. Cool, I have the AX3000. However, when I dig deeper into a sub-page, it says the device is an AX55.

