How are the Dutchware 3,000lb straps different from the Dutchware polyester straps?

I致e tried two different styles of cinch buckles on the regular poly straps and they slid a few times, fraying the strap edges. Are the 3,000lb straps thicker poly? Or a different material?

Of course it値l be better if they are less prone to slipping through cinch buckles.

Recently I知 using the x-bend to secure the poly straps to the CL but cinch buckles would be easier to adjust.