LT4 lt1 vs lt4 weight

[garlt4]

I was looking at the specs provided here... the LT4 weighs over 200 lbs more??? this makes no sense. also 1000 lbs makes no sense. can someone clue me in to what i am missing?

 

[6 Shooter]

Here's a link to an old weight thread

LT-5 vs. LT1 and LT4, Weight