Torah613, you may be acquainted with an individual Sephardic girl who is more intelligent than an Ashkenazic girl; however, in an educational setting you will find that the Ashkenazic students as a whole will score higher on tests and perform better in oral presentations as well. This does not mean that you cannot find a brilliant Sephardic student.
Some studies seem to show certain genetic indicators for higher intelligence to be passed down from the mother’s side. Interesting in light of the fact that young men looking for a bride are cautioned to check out the mother’s brothers. There will always be those who prefer beauty to brains though, and they still stand a good chance of having a happy home and well-adjusted offspring.