I don't have time to rerun the open-air test now and generate all new plots.
The 88 is in the chamber now with new firmware. 5 GHz isn't impressive (as I would predict).
After I test, I'll get the results in the Charts and you can read 'em and weep.
I'm still at a loss why you guys, who should know better, get all worked up over being the first in line to debug new routers. You'd save money and get as good results by using an AC1200 extender. The new ones are pretty good, especially with their ability to use the other band for backhaul.
But, as I'm reminded, it's your money and not everyone is value focused.