Subject to the other provisions of this Act and the rules, [the order of a Tribunal finally disposing of an application or an appeal shall be final and shall not be called in question in any court (including a High Court) and such order] shall be executed in the same manner in which any final order of the nature referred to in clause (a) of sub-section (2) of section 20 (whether or not such final order had actually been made) in respect of the grievance to which the application relates would have been executed.