Hi Richard,
If you're comparing specifications on websites or brochures, you first need to compare the GVWR to see if you're apples to apples on the basic trailer offering.
Then consider that the published pin weight and the actual weight can be quite different. Each manufacturer may use different assumptions and methodologies in their specs. For example, one may base their spec on a prototype without any options, including any forced options. Another may base their spec on production models.
So it may be difficult to get an apples to apples comparison.