The D7200 is indeed punchy, and the bass is actually more full than the TH900. But with EQ, the 900 slams harder imo.I would say the Denon d7200 has the most impact / slam / punch that I"ve heard in a headphone. The Fostex th900 comes in a very close second to my ears.
The focal clear with sheepskin pads also have alot as well, but its a bit different. The focal clear hits with weight behind it, making it feel like a visceral thud. Where as the d7200s hits with speed and agility, if that makes sense. Kind of like the difference between a Mike Tyson vs George Foreman punch. The clear would be foreman.
The sony z7m2 also has decent impact but nowhere near the other two. It has more bass volume and I would describe it as heavy and enveloping but the impact is softer.
I dont know if its the correct terminology but I categorize rumble to be all sub bass. In order of most to least, I'd say it goes TH900, z7m2, d7200, clears dont extend well into the lower frequencies, it has very little sub bass.
With iems, i'd say the TRN st5 has really good impact.
That setup at CanJam didn't show what they were capable of.