I'd say liking someone for their money is more superficial.
The body (including looks) is part of the self. This is true in spite of the fact that many of us live in societies influenced by religions that view body and spirit/mind as separate things.
Clearly, money isn't a part of the self. However, if someone is rich, that may be a reflection of deeper personal qualities whether good or bad. Though looks are to a large extent out of your control, they can be influenced by diet, exercise, hygiene, etc, and so someone's looks may also be a reflection of deeper personal qualities.
I think liking someone for their looks isn't really all that superficial. We all tend to have our own perceptions of what we find attractive and we tend to gravitate towards those who possess those qualities. That's just human nature.
When someone is attracted to another person's wealth, even if they're not attracted to the persons looks, character or morality, that is superficial and immoral.