Hello my friend. You have been looking at the numbers. Unfortunately you can't compare 2hander and polearm numbers. The biggest difference is with length:
http://forum.c-rpg.net/index.php/topic,25086.0.htmlThis proves that when comparing polearms with 2handers or 1handers, you can roughly subtract 25-30 in length from the polearm length stats to get the effective length. So the Bec De Corbin in reality has 90-95 length. That's pretty short. When it comes to speed the differences aren't that big, the Bec is actually slightly faster. However the Bec is shorter than a simple one handed sword, and is of course slower than it.
Then comes the polearm animations. They are a lot slower than one hand and 2hand ones. To have any speed with a polearm you either have to get a very long weapon (glaive) or a uber fast and light one (quarter staff), or a mix of light and long (long hafted blade). However, the bec is none of those things.
When it comes to damage, the Danish deals more damage on average. I tested the melee weapon damage calculator with 15 STR, 5 PS, 150 wpf, enemy 40 armor (which is average of people on cRPG I'd say) and the Danish had average 27,5 while the Bec had 27 on average. I call that pretty equal.
So this is why you don't see hordes of people with Bec De Corbin in game owning ass, but you do see hordes of people using Danish owning ass. I have tried a lot of weapons and playstyles, and in my opinion the best polearm/2handed weapon out there is actually the Danish Greatsword. It's only drawback is it's cost, but sell one loompoint and you can has it forever
I would also like to add at the end that the best tankkiller is the morningstar. 38 piercing damage and bonus against shield makes it extremely good vs shields and can cut through armor pretty well. It's speed is about the same as the Bec, but the length is unfortunately 10 shorter.