Of course I mean it, why would I write it if I didn't!!
It seems precise enough to me, and presumably to Andrew who's hosting the tests.
Sorry, I fail to see what your third paragraph has to do with what you quoted. If the amps are indistinguishable, then there's no audible difference between them, within the limitations of the NAIT, which is mostly to do with power output, but also HF distortion which is above the 0.1% criterion. However, HF distortion is less important than MF distortion, although it can cause intermodulation audible lower down. Nevertheless, if the NAITis indistinguishable from the NAC/NAP and goes sufficiently loud into the Kans, then there's no need to use anything more powerful.
If the amps come out different, then it's possible to investigate the differences and find a reason. We haven't established whether the NAIT is transparent or not, as it does have those limitations at HF, but I would expect the NAC72/125 to be transparent going by the measurements, so if the NAIT is indistinguishable, then it too is transparent within its performance envelope.
S.