"In my opinion..." when you think about the variability of wood, having a neck that you personally like is you're best choice. My take is that the set-neck design of Tiger is the biggest tonal factor when compared to a bolt-on type guitar. I think you would also find it difference tonally over a neck-thru design.
Wood density is measured with the Janka scale. It involves a hydrolic press, a steel marble of known size (0.444 in) , and a guage to measure force. If you look up Cocobolo, for example, you'll see a Janka rating on some sites of 1400, and on others 2600. If I were guessing I would presume that the sites are copying data, and that somebody had a typo. The cocobolo I've had rates in the 2400-2600. Do I know? Not absolutely. Heart wood, core wood, outer ...it's all different ...on every tree. I've begun doing some tests on a homemade tester of regional PNW species, and 25% - 40% variability is not uncommon.
My point is this...without buying slabs of cocobolo & vermillion etc from Doug Irwin...and getting him to convince you that the wood is from the same tree/block as Tiger, you really are dealing with statistical uncertainty and variation to a very great degree. The overall resonance signature between a baseball bat-like neck, and a more modern "C" shape is very likely below detectivity.
This is not to imply that one should not try to emulate these things. All factors play into the overall experience. One day, when I'm old and wise, I'll find a way to measure all of this.
"Hi Ho...the Carrion Crow...FoldeRoldeRiddle"