I like the Taylor jumbos, and I used to own a lovely 655. I also love what Taylor does with their dreads, and now own two DNs, one of which is my main player.
I've come to the consclusion that Taylor makes dreds for folks who don't like "traditional" dreds (the signature Marty voice that is ubiquitous), and thus appeal to a different niche. This explains --at least to me-- why so many don't care for the Taylor DNs and gravitate toward the innumerable options that cop that "other" tone. But for those who like the Taylor, it is about that tonal balance that is not mid-scooped or bass-heavy. This is why I had never owned a dred in the past, and now own two from Taylor.
As for comparing to their jumbo, I think lots has to do with the woods, but if I were to generalize (always a bit dangerous to do so), I'd say the DNs tend to have more mids and thicker-sounding trebles than the jumbo. But that's given my very small experience with having owned one jumbo, and hands on only a few over these many years. Contrast that to the plethora of dreds Taylor produces throughout their line and perhaps we have a glimpse into why they moved in that direction, or toward the GP, anyway.
Edward