No, both the referencing styles are very different, although they may look similar due to the insertion of footnotes. Oxford University invented the OSCOLA referencing while writing any assignment, but now the style has been acknowledged and accepted by many other universities residing in different countries. There are differences based upon the punctuations and formatting of the sources. For example, the list of sources cited at the end of an assignment has termed a Bibliography in OSCOLA style, whereas the list is called a Reference List in Oxford style.