Of course the LT Wrangler HT will be the better tire if your into 40k-60k miles of service. You won't get that kind of mileage with the any tire with only 8/32 of tread depth like the Endurance...if it matters. Most rv trailers (not all) don't see 40k-60k miles of service before time to re tire.
garyp4951 makes a good point on the LT with 3042 lbs vs 3400-3500 for the ST tire. However the LT works great on 5.2k and 6k axles. Those all steel ply commercial grade 16" LT E Bridgestone R-238 are at the top of the LT E heap.
The Providers aren't part of the old load E/D/C ST 65 mph rated china bombs. Be careful ordering the Providers from certain suppliers. Taskmaster makes a low cost 668 ST tire that some websites say their the Providers....which there not. I had Discount Tire order the 2nd set of Providers for a car hauler in ST235/80-16 E. I ran the OEM set 26k-28k miles and 9 years till the tread wear bars were just starting to show.
AS I mentioned in my first reply the Providers are one of the first out on commercial trailers in '10/'11 L speed rated ST tires.