I disagree and can only assume it isn’t an apples to apples comparison you’re referring to: it’s got with physics, hence mostly the room than anything else, and I can see no reason why there would be a difference between active and passive provided the cabinet type is the same (and in particular if the active subs, as in my case, are servo-controlled open baffle, never encountered anything that would work alongside the room acoustics more rather against them). The only difference, physically, that I can think of, all else being equal, is that the damping of an active system may be adjustable (having said that, I’ve built passive speakers whose damping can be inductively adjusted over a wide range from vented to quasi-sealed). The main reason many active subs sound disintegrated is that their input signal is being tapped off a pre, so they do not share the sonic characteristics of the main speakers, a lack of coherence that tends to be magnified when the mains are driven by tube electronics and the subs by solid state via low-level signals.
Greetings from Switzerland, David.