I still say it's all down to the guitars.The JB will have been tested and specced up for guitars available in the early eighties. Woods used and construction methods were different back then.The HD was designed recently, using more recent guitars, hence it works well in new guitars.The interesting test would be to put a brand new JB and HD into in both an eighties guitar and a new guitar. If anyone has a new JB knocking about I wouldn't mind testing it back-to-back in my PRS McCarty with the current HD, and I can compare it with my 80s Ibanez RG (plus the old JB in my '87 Baretta)................
HD isn't big on high mid and top end crunch in my guitar. It's more low mid growl.Sounds like you want a Rebel Yell?