Jake,
I'm truly sorry to say this, but you are a dumb [censored].
All the things you state as counter arguments were adressed in my initial post.
But I guess you missed them because you were too lazy to actually read what I wrote.
in that it ignores the diameter of the aluminum required to achieve the same bending properties as if it is not important.
Let me put it in a kindergarten format for you :
a 59x1 mm alu tube will have the same (bending, torsional, buckling) stiffness and weight as a 40x2 mm carbon tube.
Wouter
