Where the provisions of this Ordinance impose greater restrictions than those of any statute, other ordinance or regulation, the provisions of this Ordinance shall be controlling. Where the provisions of any statute, other ordinance or regulation impose greater restrictions than this Ordinance, the provisions of such statute, other ordinance or regulation shall be controlling. It is not intended by this Ordinance to interfere with or abrogate or annul any easements, restrictions, covenants or other agreements between parties, provided, however, that where this Ordinance imposes a greater restriction upon the use of land or buildings or requires larger yards, courts or other open spaces than are imposed or required by existing easements, restrictions, covenants or agreements between parties, the provisions of this Ordinance shall govern.