I'm confused about the usage of the adverb "mieux" and "meilleur(e)". In the sentence "J'aime bien ta voiture, elle est mieux que la leur." adverb "mieux" is used, so the adverb now describes how the car *is*. So, I saw the verb "to be" being described by both the adverb and the adjective and I have no idea why it is so.
If there is a lesson for that, that will help a lot.
