Couple points here.
*With the D. Lakin Glaub, there's a choice of 1.5" or 1.75" nut width. At G&L, there's a $50 upcharge for the other neck options.
*Blocks and binding are an option. (Currently no charge, although this may change.) Not so with G&L, correct?
*The wide range of color options is worth it for some folks, even if it isn't for others.
*All but one of the Lakins I picked up this past Sunday were clearly under 9 lbs. by my reckoning. A sub-9 lb. G&L is the proverbial needle in a haystack. Again, maybe not a big deal for some players, but a pretty big deal for others.
*The Lakin basses have graphite rods in the neck--I know some vintage purists balk at that, but they do provide added stability. Not sure if G&L has that.