AVM promises indeed a coordinated cooperation with AVM WLAN APs (eg Fritzbox WLAN) - but in practice, I could not "dynamic" signal management by the AP as notice to other devices.
Whether the device also in DE comparatively less occupied 5 GHz band can, I have not in my head - because the Fritz boxes this anyway did not offer, has me not interested.
The device is just really easy to set up even for the laity (!) - But these are other, sometimes cheaper devices also. If you can do without the additional features, it also does a less expensive device.