Not necessarily. The DS,A and NIC metrics measure acoustic performance differently, so a direct numerical comparison is not technically valid. What is documented: HIGHKA’s ISO 23351-1 test shows particularly strong performance in the upper speech frequency range — 41.1 dB at 4,000 Hz and 43.9 dB at 8,000 Hz — which corresponds to the frequency range most responsible for speech intelligibility. These are the frequencies at which human conversation becomes recognisable as language, and at which strong attenuation most directly supports speech privacy.