Im not sure the adaptive one pads are still like this but when they were introduced many years ago their claim was that the inner vs outer pads deal with different cooling ability, thus their friction coefficients were optimized for that attribute. This meant slightly different friction coefficients between the inner and outer brake pads. This wouldn't cause unsafe braking by itself though.
Now that I think about it, I tried them on an 09 chev malibu as well and didn't like them in that application either. This was more than 10 years ago though so I wouldn't be surprised if things have changed since then. Since banning copper from pads, many formulations have changed.