I’m sure you are aware of Ron Bernay and his sound shed, designed and equipped for controlled listening comparisons. If the parties involved were willing to provide Ron with 2 sets of speakers, original and modified, we could get a better take on the sonic comparison. However, they would need to commit considerable time and resources, and I don’t know how high a priority this would have.
Ron and Danny are good friends and have designed speakers together, so you might say Ron has a significant bias. Plus, Ron has a long record of believing considerably more egregious nonsense than crossover part quality.

