With these kind of distortion figures, IMD will be bad as well.Harmonic distortion is anyway unfortunately not a great metric to correlate with audibility, would be more interesting to compare the intermodulation distortion of both where the 2-way KH80 would be also superior, see also
Then again, I would be a fan of having multitone measurements for speakers (and headphones). I think Amir tried that once and found too many issues with the comparably of the measurements. I’d say: give them anyway