no one has mentioned the fact that Honda does NOT recommend using a WDH with the Ridgeline.
any auto company that says that about their truck, doesn't consider it a real towing vehicle.
Honda is the only company i know, that does this, which goes against every other auto manufacturer recommendations.
IMHO, the Ridgeline is really only a good tow vehicle for low profile trailers or boats.
a full height TT will cause enough air resistance to tax that Ridgeline.
just so you know that i'm not a Ridgeline hater, we were going to buy a Ridgeline to tow our new HTT. but the more i read the specs, reviews, mpg ratings and Honda's anti-WDH policy, i realized that not even Honda sees it as a capable tow vehicle.
plus it cost as much as the Avalanche we bought instead. and the Avy got the same gas mileage, tows 2200lbs. more and has room for 6 adults.
so, my vote is for the Tundra!