Re: fender question
well, the vintage strat pups were all wound to the same spec, though they varied a lot due to the hand winding methods used then
as someone pointed out when the question was asked, the newer American Series have a hotter wound bridge to compensate for the weak tone of standard wound bridge pups
but, yes, the position plays a big part in the character of the tone, because of the varying string travel at the different locations - i.e., closer to bridge, less travel
pickup height can also play a roll - for instance, on some hotter pickups (Texas Specials are an example), I think they smooth out some if lowered a little