I really like the necks on the roadworns.
Anyway, as to theories over why it's so different? Definitely "different lumps of wood etc" is almost enough for me to quit wondering :lol:
I've also read how one neck might seem "poor" tonally (to a specific individual) on one body, and then interracts with another body to create the tone... (and the left over neck/body can seem better when put together).
It could be mojo, snake-oil, anything! :lol:
However! Something VERY strange happened to me and my CIJ "62" strat. A few months ago, I finally decided to strip the back of the neck - I'm never going to sell it, and I want it to feel like I want it to feel, etc, etc, so off I went...
Anyway, I did it without taking the strings off (I was even playing it on and off while resting my sanding-arm) - that guitar got a little louder and definitely brighter... this was a lucky break as far as I was concerned, it was lacking a bit in comparison to my roadworns...