sealed speakers benefit more from room gain.
A vented speaker doesn't have meaningful output below its tuning frequency anyways, so I think it hardly matters that it isn't able to pressurize a room in the same way a sealed cabinet would. *At* its tuning frequency, the port and the cone are in sync, which means the vented speaker will pressurize the room in the same manner as the sealed speaker would, actually even better since it builds up pressure from the cone
and the port. And above its tuning, pressure vessel gain is irrelevant since wavelengths will be acoustically small for the size of a typical residential room (at typical tunings too for that matter) and you'll see modal behavior instead. No matter how you look at it, I think this is a non-argument and such a statement creates more confusion than it solves.
