Sealed vs Vented enclosures

I've never seen a sweep test of a sealed design that didn't have a hump in the upper bass (around 100 Hz). Yes, the rolloff is usually 12 dB/octave below that, but with an open baffle design, the rolloff is only 6 dB/octave. The rolloff of the bass doesn't determine quality, in and of itself.

Can we glean from your post that all acoustic suspension loudspeakers, or all at least for which you have seen a frequency sweep, start rolling off at or around 100 hz?

And would be 12 db down at 50 hz?