Comparing those 2:
1) AT-1: works well with 500k pots, fat vocal lead tone but with some bite on the highs, low mid hump for balls on chords, seriously complex harmonic content. Comes across as having much higher output than DiMarzio's chart would indicate. If combining with another humbucker or hotter singles that like 500k, i.e. Injector necks, heavy Blues, Cruisers, this works better.
2) Norton: High mid emphasis, IMO does not like 500k pots. The highest I've used it with good results is about 400k but that guitar has an aluminum guard so there is lots of stray capacitance running around to darken up that Norton. More like 250k-350k seems to fatten it up and take off the harsh in most guitars. When combined with the right value volume pot, has a very vocal midrange, albeit brighter and not as fat as the AT-1. Doesn't have the complex harmonics of the AT-1, more like what you'd hear on a PAF. Very clear and articulate, comes across as lower output than the AT-1 in spite of DiMarzio's chart, but not in a bad way. It sounds clear and clean due to the brightness.
Combining with Area 67/58/61/54, or similar singles that like 250-300k pots, this works best.