There's been some confusion about what the nut width on this new range of Tribute LB-100s is.
Previously they were 1⅝". Sweetwater are listing some at 1½", which is clearly nonsense, just from looking at the photos. The specs on the G&L page for these new block inlaid LB-100s give the nut 1¾", like the Tribute L-2000.
The G&L website has been known to give incorrect specs for Tributes, but, zooming in on the first frets of the LB-100 and L-2000, through the fuzz of photos blown up too far, they do appear to be the same:
Hopefully you couldn't care less whether it was one or the other