I just found my notes of my measurements of my 4strings. Measured from the edge of the bridge to the row of pickup poles closest to the neck:I've never heard that the pickup spacing was different.
Mk1 = 140 mm
Mk2 = 130 mm
Mk3 = 132.3 mm
Then measured forward poles on front pickup to rearward poles on rear pickup (pickup spacing):
Mk1 = 111 mm
Mk2 = 103 mm
Mk3 = 103 mm
So in actuality, the Mk2 4 string pickups are closest to the bridge. The Mk3 not too much different, but even tho the two basses have the same spacing, that means both pickups on the Mk3 are about 2.3mm further away from the bridge than the Mk2.
I still haven't measured my 5strings for comparison, mainly because my Mk2 5 is a prototype bass and the pickup placement is totally different as well as the pickups themselves are narrower, so its totally different than the newer bass.