When he does you'll see the high levels of bass distortion (compression) which is higher order (3rd and 5th) and can not be fixed in any way.
Not an issue for the intended purpose. Also not an issue at background to 'long sensible level' listening levels.
The compression at higher levels kind of 'invents' extra harmonics in the already 'beefy sounding' bass.
They will thus not get a recommendation because of the huge amount of distortion at 114dB and their non-compliance to Harman.
With EQ they might as Amir also did not hear the substantial compression in the ZX110 which is much worse.
Amir will lower the upper bass and mids, add about 5dB at 8kHz and probably do nothing above 13kHz because the test fixture (with correction) over-reports the upper treble so would appear to be the correct amount.
The pads attenuate almost nothing.
I have (can, actually) not measure attenuation but thought it was decent and a bit higher than say DT770 (one of its competitors) and about on par to MDR7506 which is closed.
The pads that are somewhat leaky (on purpose to obtain the right bass response) makes the NTH-100 a semi-closed headphone.
Given how much the frequency response is affected when seal is broken it is just lightly semi-closed.
The pads have a layer of gel near the cloth which are supposed to cool the skin by conducting heat from the skin so it can radiate heat on the outside of the pad. The surface area is very small and covered with cloth so suspect the cooling effect is wishful thinking and perhaps a bit gimmicky. The thin gel layer will not leak air but the soft foam layer underneath which, combined with the used cloth may just a little.
The gel layer is a bit firm so seal might be harder to obtain when wearing glasses.
Again, no issue in studio usage for the intended purpose but maybe an issue for glasses wearing sub-bass fans.