Sequoia towing at max for over 5,000 miles - comfortably

Had a North Trail myself before the current 5er. Worst towing trailer I've owned. Always wanted to waggle around, even with the Hensley Arrow I finally used. Hard to say for sure if the NT in the pic has the axles more towards the center like mine did. Even with 12.5% for TW it still wiggled. Couple poor towing characteristics and a shorter WB of the SUV, I could easily see it being a sway issue. Pure speculation at this point but from my experience thats where I'd put my money.