(a)      If regulations adopted under this article require a greater width or size of yards, courts, or other open spaces, a lower height of building, a reduced number of stories, or a greater percentage of lot left unoccupied, or impose other higher standards than are required under any other statute, local ordinance, or regulations, the provisions of the regulations adopted under this article shall govern.

      (b)      If the provisions of any other statute, local ordinance, or regulation require a greater width or size of yards, courts, or other open spaces, a lower height of building, a reduced number of stories, or a greater percentage of lot left unoccupied, or impose other higher standards than are required by the regulations adopted under this article, the provisions of the statute, local ordinance, or regulation shall govern.

      (c)      (1)      This subsection applies to the Maryland-Washington Regional District established under Chapter 992 of the Laws of Maryland of 1943, as amended.

            (2)      Within the limits of the Maryland-Washington Regional District, in Montgomery and Prince George's counties where there is city and regional planning and zoning administered by local agencies, this article does not supplement Chapter 992 of the Laws of Maryland of 1943, as amended.

            (3)      In the Maryland-Washington Regional District, the additional and supplemental powers vested by this article in a municipality or council may not be considered vested in and may not be exercised by a county council acting as a district council under Chapter 992 of the Laws of Maryland of 1943, as amended.

            (4)      In the Maryland-Washington Regional District, the powers vested by this article in a planning commission or board of appeals may not be considered vested in and may not be exercised by the Maryland-National Capital Park and Planning Commission, the planning board, or the board of zoning appeals of the county affected.

            (5)      To the extent that the provisions of this article may be inconsistent with or contrary to the provisions of Chapter 992 of the Laws of Maryland of 1943, as amended, the provisions of this article do not apply within the Maryland-Washington Regional District.

            (6)      The provisions of this article do not affect the validity of Chapter 992 of the Laws of Maryland of 1943, as amended.