Vandersteen vs 18db crossover video rocked my world.............

Took the trouble... and put my cans on.

The Vandersteens do deeper low (obviously), about an octave, I'd say
It's remarkable that you really (I suppose) hear the power dip of the expensive speakers. Think some contribution of the boundaries in the high mid frequencies is responsible for that, the on axis response of both speakers will be different as well. The measured response on another YT-channel is pretty impressing for such a cheap speaker. It shows a not so good compensated baffle step (that probably is what we hear, on 2nd thought). But I guess the Vandersteens measure worse...