Interesting, I'll have to investigate this, I've had other Asus in the past, but not those two versions. I'll have to check the chips on the ones I've had.
You might also be interested in the Ubiquiti Unifi WiFi APs. They are access points, so you still need a router and a switch. I got a Unifi AP AC Lite recently, and it's probably the best AP I've ever used, behind perhaps only the Apple ones.
The RT-AC68U or RT-AC88U are better choices (because they use Broadcom?). My RT-N66U has been a flawless AP for years.