True. None of this takes anything away from the Tundra as it's capable in its own right. It's a truck after all and that inherently makes it better at truck things, including towing on account of its longer wheelbase. Just makes for interesting observations when comparing and contrasting.
Looking at GAWR, the axle splits are interesting.
| 200-series | Tundra 2nd gen |
Front GAWR | 3595 lbs | 4000 lbs |
Rear GAWR | 4300 lbs | 4150 lbs |
Knowing the front structure and suspension components of both 200-series and Tundra, and where there are shared parts and different parts. It would be hard to say the 200-series has less structure in front. Cursory observation says the 200s got beefier elements and LCAs. Very similar to same bearings, steering, uprights, etc. Perhaps that's not true, but perhaps it is and the GAWR is not established by surface level thresholds we understand.
At the rear, the Tundra axle diff housing is obviously bigger. Don't know about the rest of the axle housing. 200-series utilizes a more advanced 5-link suspension whereas the Tundra uses leaf springs. The 3rd gen Tundra, and all high performance off-road specials from Ford and Dodge use 5-links. Whether that's better for weight bearing is probably different factors, but the 200-series is built to a higher standard.
I'm interested if anyone else can read into this and provide insights.