On Konquest it tells you that you take more damage when you are equipped with your weapon and I had noticed that this was true. Basically I had noticed the change in damage percentage when i did a combo against someone without a weapon and then performed it again when they had a weapon.

Eventually I noticed exactly how much extra damage was done.

It's only 1% more. But it's 1% for every 4% damage you do. This was confirmed when I began learning how to use Kitana.

Her maximum damge combo from Eagle claw is 40%. when the opponent has a weapon it's damage value increases to 50%. The same combo, if you leave off the last hit does 36%. With a weapon in their hands, it does 45%.

Basically 40% = 10 x 4 therfore you receive 10% extra damage. 1 % for the number of each 4% damage.

36% = 4 x 9 therfore you receive 9% extra damage, raising the total to 45%.

This is nothing serious but it shows that you should go for the big damage combos when your opponent has a weapon out! Try it yourself! Hope it helps!