I told the dealer what I thought about the Sophias, and he told me that Wilson actually intentionally de-emphasizes the decay in their crossover.
I am not sure what the dealer means here. Any resonance will be controlled by the box volume, porting and woofer selection. Some speakers resonate due to the use of light weight rigid drivers (Ceramic for example) and these ring like a bell ( a sort of gloss or sheen to the music) at some non musical related frequencies that require taming with notch filters but are never completely absent (Audio Physics have ceramic mids in several designs)
Are you hearing something further up in the lower midrange crossover or upper midrange crossover that you don't like? I don't dispute your observations and only you can choose the correct speaker for your tastes. Crossovers are the main compromise in three ways. You may find active speakers sound more natural through the entire range, as there are no crossovers.