I have KPH40X which I think are better than the Porta Pro for ergonomics. Often background sounds in videos have me thinking someone is in my room. Doesn’t happen with my closed backs to the same degree. I am running Yaxi pads.
The soundstage isn’t insane or anything but they’re crazy comfortable and not fatiguing.
How is this even estimated in the software? What are you listening to and on what?
Edit: I see just airpods. Passive isolation will lower the noise from the subway as well. The subway is very loud itself. Also airpods have a metal mesh that get full of earwax. You can use a very fine tooth brush from the brand Curaprox + Isopropyl alcohol to clean it out. They get extremely quiet as they fill up with wax. You might think they don’t even work.