That's fine if that were the case with the figures in TDK line, the head sizes go from small to medium to large. The smallest being the Bruce Wayne head, which when measured to the OC Batman head has the same difference in size that my Joker head has to the DX Joker head, about a millimeter. That would mean in 1/1 Batman's cowl would be an 1 1/2" to 2" thick, which it was not. Also in the small category are the Two-Face and Dent heads, medium are the Joker heads, and large are the Batman heads (the largest in width and length being the OC Batman head which is a tiny bit larger then the DX Batman head). HT head sizes are rather inconsistent for some reason.
Nothing with any of these figures is perfect or will ever be, and I didn't size my head only to Bob's Joker. It just ended up that way after I had measured the head to fit anatomically to the hands, feet and length of limbs and width of shoulders (on the regular TT body, not the narrow shoulder one) . So if after that my head ended up the same size as Bobby's then well I guess he was right too. You don't have to agree with me, that's fine. I didn't start out to do this for anyone but myself because giant hands bug me, and then it just kind of blew up from there. If no one else minds then I really see no point in you beating a dead horse, but if you feel the need to go ahead. All I would ask is please don't start any arguments, thanks.