Don't know the answer to your 1st question, but lower output pups can only be tweaked so much. I have the new Di Marzio 615 in and it's similar to the Twang King without the noise.
The high strings still sound brighter than with my other Tele with a higher output pup no matter what adjustments i make. The good news is you can tame that brightness somewhat with settings and pedals depending on what you have.
...And Harry doesn't mind if he doesn't make the scene. He's got a daytime job, he's doin' alight