"I could say my Tundra is an SUV with a bed -- it's just a Sequoia with a bed, right?
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The original Sequoia was based on the Gen 1 Tundra, not the other way around. The Sequoia is a Tundra with a big trunk, low range and a locking differential, in 4x4 versions of course. The Ridgeline does not offer a low range or a locking differential.
If I am not mistaken, the 2wd version of the Ridgeline is FWD.......
This may be the biggest "apples v oranges" argument I've read concerning 2 vehicles. Other than a open bed, the Tundra and the Ridgeline could not possibly be more different.