The extra bucks buys better steel. Which can mean more rugged or lighter or both.
It can also buy custom fit, better saddles and wheels, lighter components.

I am a big fan of the LHT, don't get me wrong. They are popular around here, and
the guys that have them seem happy with them. But there are other touring bikes,
very nice ones. Whether they are worth the coin is a personal choice. Ever test ride a Waterford Adventure cycle?