Every modem is compatible with any router.
The 15 Pro has the AOD, the 15 does not.
I am glad that you see it.
I had a 13 Pro for 2 years with no issues. I got a 15 to save money or I would have kept the 13 Pro. I never used the telephoto lens and I could not tell the difference between 120HZ and 60HZ. I don’t know anything about the 14s except what I read.
I miss the number row on Apple keyboard.