Cornwall IV vs. Volti Rival, Razz; Razz v. 1, 2, 3 -- what changed?

@silverfoxvtx1800 I did not listen to the SE version of the Rival. I have heard the type II and loved it. Everything the Razz does just bigger and fuller. Plus the low end extension was deep and effortless. I hope to get a pair of Rival's one day, or even (gasp) the new Vittora.. If I had the dough right now I'd probably get a pair of Type 1 with a cool veneer combo to make the chamfer really pop visually. 

Though my more realistic goal is still trading up to a new pair of Lucera's. 

What’s up with the horribly uneven frequency response of Volti Razz as measured in the Stereophile review. I am not criticizing, rather asking a honest question.