The Swiss Miss
Hmmm... a slow edge to edge feel could also derive from a torsionally soft board. Maybe that's OPs issue. The Explorer is rather soft in those terms.I don't consider it wide either but the op did say that its slow edge to edge which tells me he uses lots of energy in his legs trying to force something to happen down there just like I did for the first 10 years of my riding career. Slow edge to edge means I'm not leaning over enough, I lost leverage.
Iirc, your boards are torsionally rather stiff, at least the ones I tried. Even "the beast" felt quick edge to edge, even tho it was massively wide to me. Getting it ON edge, that was the sporty part, lol, but not the transition itself. Thus... I'm not sure if "quick edge to edge" is primarily a width thing; I would rather suspect torsional stiffness.