While @Entity takes an optional name, it isn't a table name. It is for the case where you want to refer to the entity using a different name in JP QL queries. @Table's name attribute is the actual table name.
@Table's name is used a lot. @Entitiy's name is much rarer. It is useful if you have two @Entity classes' with the same name and you need a way to differentiate them when running queries.