I think lying is fairly equal between the sexes. They just lie about (different) things. One report stated women are more likely to lie about weight/body type and age while men are more likely to lie about height and salary.
Aside from that if you talk to a group of women they're likely to say men lie the most and if you talk to a group of men they are likely to say women lie the most.
I know of one guy who considers any woman that wears hair extensions, push up bras, fake eye lashes, concealer, and finger nails to be lying. LOL!