If this article had a heading for a section titled the opposite view defending Shakespeare's greatness what would one expects to see in the section

This section would contain arguments as to why Shakespeare was not so great.

The opposite view of defending Shakespeare's greatness would be to prove he was not great. Therefore, this section may discuss other Renaissance authors, such as Christopher Marlowe, or it might argue that Shakespeare was not educated enough to write the plays attributed to him, or this section might argue that Shakespeare's plays were not as great as the plays of other playwrights.