In the article, it talks about how the weight of the vehicle is one of the greatest factors in determining friction, and weight is not a universally superior factor in trucks.

(It is for specific tasks, and up to a certain point, but there's a reason why Ford replaced their steel bodies with aluminum.)

In other words, given that the Cybertruck wins on torque, there may be better ways to demonstrate it than showing that it's heavier (as stated in the article.)

No. That's just an unequal comparison of different classes given the significant differences in size, weight, and price. Why not compare the to an F350 then?

That friction is relevant most when it's loaded, which is arguably the main use case for a pickup truck. That was not tested in this case.