I have been playing for 40 years, mostly in 3 piece bands where the bass carries into the mids a lot, especially during solo's, and I really think you (meaning anyone) can spend too much time worrying about this type of thing because the subtleties being examined are totally lost in a playing situation.
We all know that the sound you want on stage at concert volume, is the sound you get at home under ideal listening conditions. That sound, if achieved, is lost again as you move around the stage in different orientation to your speaker projections and then if your rig goes throug the PA, forget it, You are having yourself on (again, meaning anyone) if you think those subtelties exist at all, at that point.
That is the very reason Entwistle progressed to a Stramp Pre Amp and 4 x 300 W poweramps into a crossover network of speakers, to remain self powered as he knew too, that a PA would consolidate every subtlety he wanted to achieve.
I am fussy about my sound, just as much as anyone. If I play a run, I want every single note to be heard and flow with equal tone and volume on every string.
I demand it. but...at some point the variances between venue size and shape, number of people in the audience, height of the stage, stage itself, distance your amp is from the audience, guitarist you play with and then the imperfections of the PA attemting to subdivide your sound in a crossover network means...............
The subtleties of 2 necks is relative to the strings, pickups, the user, meaning where he plucks, how he plucks and the consistency of plucking from neck to neck, can only be realised in a studio. Now that does matter. But the bass for studio work is not necessarily the same best choice for live work.
Thems me thoughts.
PS: Maple fretboards are pretty but Rosewood is warmer to my ear.