The 80D is a really nice camera and a good overall value. The 6D2 has 2 major turn offs for me: AF points clustered too much in the middle and low ISO dynamic range. The 80D checks both of those boxes plus it has a good frame rate, high pixel count, and flippy touch screen.
It's my understanding that phase detection AF on FF cameras will always have the focus points concentrated in the middle 1/3 of the height of the frame. Width-wise, there isn't the same physical limitation, but perhaps there are implementation restrictions.
We're a Canon/Profoto family: five cameras, sixteen lenses, fifteen Profoto lights, too many modifiers.