I think the reason the tp-link device is mentioned, is that is a dual radio CPE with multiple ethernet ports and usb. Mikrotik doesn't have anything integrated into a CPE type device that supports 5ghz and 2.4ghz. (Not even a dual BAND radio, much less dual radios). And while its true you can build ...

Right. So how did I set the default priority to something else?

Is there a way for me to set a default priority with queues? For instance, I'd like all traffic I don't specifically match to have a higher priority than P2P traffic. From what I can tell in the documentation the default is to assign all traffic to the highest priority? This doesn't seem correct.