3Where, on an application under paragraph 2 above, the tribunal are satisfied that—
(a)the rent to which the application relates is not substantially higher than the rent which in their opinion would be determined for the holding in question on a reference to arbitration duly made in pursuance of section 8 of the principal Act on the date of the application (hereafter in this paragraph referred to as " the appropriate rent ") ; or
(b)the rent to which the application relates is substantially higher than the appropriate rent but was not fixed by the parties to the relevant contract of tenancy with a view to increasing the amount of any compensation payable, or of any sum to be paid by virtue of the said section 12(1), in consequence of the compulsory acquisition or taking of possession of any land included in the holding,
they shall dismiss the application ; and if the tribunal do not dismiss the application in pursuance of the foregoing provisions of this paragraph they shall determine that, in the case to which the application relates, the sum to be paid by virtue of the said section 12(1) shall be ascertained in pursuance of the said section 9(2) by reference to the appropriate rent instead of by reference to the rent to which the application relates.