Lynnmor that is a great comparison!
I don’t know nuthin about TTs, but there are ALOT of brand new ones on the road around here this summer and I’ve seen many bent axles, tires that you can tell the axle is mid aligned just pulling up next to it at a stop light and even a couple that were pigeon toed and still had paper tags in the windows.
It’s a real concern. And hard to understand. I’ve had, personally, a Triton enclosed and now an old Charmac enclosed trailer and they’ve both been beat on pretty good. Should see them bounce when bombing up a forest road in the winter to get to am unloading spot, given er he!! In the truck to keep traction and momentum, not worried about what the trailer is bouncing over as long as you don’t get stuck. Never touched the axles on either trailer. Never tire wear problems.