Of course I made comparisons, but that was in 2019 when I bought the first AH-D9200. I didn't take any notes and it's been too long. That would just be a guess. Please bear with me. However, I have tried one or two wired headphones since then, but haven't bought any more, except for another AH-D9200. There is simply no need for another, in my insignificant opinion.
So I can only compare them with the closed headphones I currently have: an Audeze LCD-XC and a Fostex TH-610.
With the Audeze LCD-XC, I notice a slight increase in the bass range. Hardly perceptible without a direct comparison with the Denon Ah-D9200, but noticeable in direct comparison. In my opinion, the Denon comes closer to reality.
In a direct comparison with the AH-D9200, the treble on the Fostex TH-610 is also clear and precise, but in my opinion it falls slightly short of the bass and mid-range, which tarnishes the sound impression somewhat when listening to classical music.
Both are excellent headphones and, without a direct comparison with the AH-D9200, both are ideally suited. But as is so often the case: the better is the enemy of the good!
I suggest a direct listening comparison to form your own opinion.