There arent any tone charts at the moment. What we know is from the experience of the forum members and the BKP guys (Tim and Steve) describing them.
There are tone charts and clips planned for the new site. I asked Tim about it when I ordered a pickup a little while ago: they have soundclips of all the pickups ready to go (the humbuckers at least in the same guitar, same amp same settings so the clips are actually usefull!) and Tim nad the engineer made some notes on the EQ differences between the pickups for tone charts.
I would say that this will still be useless for comparison with what duncan and dimarzion have made independantly, because theres no common refference, and the sound of a pickup changes from guitar to guitar, amp to amp, ear to ear, even. They may all be 'right' on the day they were made: a perfectly fair comaparison, but you cant compare two lots of relative descriptions, if you see what I mean.
And after moving BKs around some of my guitars I've found that they are very transparent indeed: they let more of the guitars soung through than anything else I've used, and sound very different in different woods.
All told, I found the expereince of other people that have used the pickups in question is more helpfull than just a set of numbers someone near as damnit pulled out of thin air, especially comparing between brands.
On that note, I'd say the X2N is closest to the miracle man, but its more like an early-teenage miracle man in kappa trackies and high on crack. Its got much more gain and can have a bit too much of a hard edge ot the tone thats difficult to control.
Apologies for the long post. I sincerely hope no one read it, its not worth it (its a particularly boring sunday afternoon in MDV land).
