The resistance numbers are not power/output levels. So 13.5 vs 7.3 absolutely does not mean that one is twice as hot as the other. They really aren't that far apart if you actually put them in a guitar and play them, and they will blend well.
Just having anything in the neck position, by nature of it's position along the string, results in a wider sweep of the vibration of the string and a more full sound to be picked up; vs the bridge position where there is very little sweep in the string to pick up. By way of comparison, the #1 replacement pickup set, the JB/Jazz, is 16k / 7.5k, and they work perfectly together.