How can you stab with a Flail?
you hold the ball
Why Does the D Scimitar have a lower Stab Bonus than D Longsword, when the Long is flat-tipped and the Scimmy is Sharp?
rather physics really. a curve sword is design for cutting. the shape of the sword is it's power. the curve was design that when one cuts a person the curve would move with the owner and slip off more easily. a longsword is like a stick. if one stabs with a longsword, it is quite possible that it could get stuck in the rib cage. good examples is like the samuria sword and a gothing sword.
Why does a D Scimmy have a -2 Crush? WHY!?!
scimmies are light, they are design to have a little flexibility. they do not have the weight to smash somebody.
(too much history channel)
besides the d long looks like the swod from lotr that the heavy orcs use