The way Catullus compares Lesbia to Veneres, the god of love and charm, seems as if Lesiba is better than the god or as if she is the god. Catullus says, "surripuit Veneres," which makes Lesbia seem as if she is now the god of love and charm since she stole all the love and charm from everyone. By using the Goddesses' name instead of love and charm imposes the idea more that Catullus is saying Lesbia is better than Veneres. Catullus could of said that Lesbia has the most love and charm out of all the women in the world, so he wouldn't be criticised of comparing a god to a human which is sin full.
I think Catullus looks for charm, intelligence, honesty, and being white skinned in a woman because he says, "For no charm and no wit is in such a great body..." which refers to the beautiful woman that he later denies as pretty. To further strengthen my argument, Catullus later talks about how Lesbia is beautiful because she has love and charm. Also, at the beginning of the poem he compliments the beautiful woman of being honest and white skinned. This supports my belief because he has never complimented another woman before. This shows he must like these characteristics in a woman.