To be fair, he ranks the Abyss TC under the
"I can see it" category, and also adds this statement :
"Extremely detailed and engaging.
This would be in tier 1 if it weren’t for A) the weight and awkward fit style, and B) its EQ potential is a bit limited as it has some strangely high harmonic distortion going on, potentially audible if you start adjusting things too much - and it definitely needs the adjustment in my opinion.
In the other words, "the Abyss TC would belong in Tier 1 were it not for these personal annoyances... blah, blah, blah..."
If it were me, I would simply place the Abyss in an a separate "unable to rank" category to avoid ruffling the feathers of Abyss TC fans. Ranking it in Tier 5 because of personal annoyances or frustrations with it might appear unnecessarily punitive to some, even if one has begun the ranking by stating the "everything is subjective.." caveat.
BTW personally, as a TC fan, my "feathers" are entirely unruffled, in case that matters