Almost no guitar or pickup company had dedicated neck or bridge pickups as far as output goes back then, so that's highly unlikely.
What is possible though, is that the outputs of your pickups don't match - you can check this with a voltmeter, usually without de-soldering the pickups, just plug a short cable into your guitar and get your reading from the plug on the other end of the cable.
Keep in mind though, that on any guitar, there's more string energy near the neck than there is close to the bridge, so two pickups that have equal output set at about the same height from the strings won't sound as loud - the neck pickup will want to be louder.
Have you tried lowering the neck pickup away from the strings and cranking the bridge pickup up as high as is still practical?
