Buuuuuut, those figgurin' numbers don't take into account the motion of the wrench about the pivot point... The wrench has no idea that it's attached to two, three or four inches of spanner. It just knows when it hits its set 10 ft. lbs. it must go 'click'.
Next...
Huh? Pivot point, shmivit point.
When the wrench goes click, that means that you are applying XX ft /lbs of torque at the 1/2" or 3/8" square drive stub from the direction you are pushing the lever (ie perpendicular to the length of the wrench) and the length of the lever.
If you then have an additional lever attached to it, the amount of added torque transferred to the very end will depend entirely on how much it adds or subtracts from the length.
Sorry Nut, the phancy figgerin' numbers don't lie.
This one is easy enough to prove. No Mythbusters required. Just give it a try.