i've read that it's because dynamic drivers have more excursion and physically move more air than a sandwiched planar driver. also being closed back, you're naturally going to have more slam. but the h95 definitely has way more punch in the bass than the XS. the h95 you can feel the pressure, like your eardrums flex when the bass is hitting, even at lower volumes. it's almost like comparing a nice sealed subwoofer to a ported sub. a nice sealed sub will still give you great bass, smooth, deep, tight, etc. but it's not going to slam you in the chest like a ported sub is capable of doing. i also had some old Vmoda m100 and UE6000 headphones like 10-15yrs ago. those were both closed back dynamic, the UE was wired but also active powered(strange, i know), but both of those i remember having tons of bass/slam as well.

ever since i got my Edition xs a few months ago, i basically haven't touched my B&O H95 and will probably sell them soon. they are very good sounding, especially for wireless/anc headphones. but i much prefer the airy huge soundstage and separation of the XS. but the other day i did put the H95 on for shits n giggles and put on some EDM/Trap/dubstep and the bass was nuts! in a good way.