How does weapon skill affect weapon damage in New Vegas

The scale is from 0.5x at 0 weapon skill to 1.0x at 100 weapon skill and the base damage listed on the wiki is correct.

I noticed that for all weapons the damage seemed to be 10% higher than expected. So I used console commands to remove the Cherchez La Femme perk and discovered that the numbers now made sense. The perk is supposed to add 10% damage only to female targets, so now I'm curious if this is a UI bug or if it actually just adds 10% damage no matter the target.