The real question is will it hold up over time? For instance, I was using 1.5 inch polypro webbing rated to 800 lbs. Yes, it held me up, but over the course of a year, I noticed a tear right where the webbing locks into the dual rings. And the webbing stretched beyond reason.
So I upgraded to 1.5 inch polyester webbing rated to 3500 lbs. No stretch: at lets not enough to keep adjusting every 30 minutes. It added 3 ounces to my set up, but it's worth it. I like hanging off cliffs and stuff. An extra 3 ounces ain't nothing if it's gonna save your life.