I don't know the answer to those questions and have never asked Axiom for comparative plots. I don't have the equipment for these measurements. Even if I had the plots, I'm not sure I'd know how to interpret the effects they have on ears-brain. I'd sure like to learn though.

I've always wondered how height is encoded in stereo. Do you know?

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated