Decware Betsy and Edge Software

How important is the use of Tolvan's Edge Software?
Take Decware Betsy OB speakers as an example. When Edge is given the dimensions for the Betsy you get an enormous off the chart peak @ 500 Hz (approx. +15dB),
and @ 60 Hz the output is -4dB which is a difference of 11dB.
The Betsy speakers are supposed to sound quite good despite the rather horrible response indicated by the Edge software, so what is going on here?
- Either I'm missing something (which of course is quite possible), or the Edge's response curves aren't really that important.