[rockyuphill]

Even the square taper Ti BB's had rider weight limits, some as low as 165 pounds.

As long as the wheel is free to roll one would expect that torque required to make the wheel move will always be much less than the amount required to flex the cranks/BB.

You'd think that the place you'd really notice crank & BB stiffness is if you're standing on the pedals out of the saddle with the cranks parallel to the ground.