Rommels Kasserine plan approved

Looking back at the Tunisian campaign, Where Rommel was forced to go ahead with his planned attack through the Kasserine Pass with a much smaller force then what he envisioned using.. What would the outcome have been had he been giving what he wanted for the attack? Seeing as he did so much with what he was given.. If he had gotten what he wanted I'm inclined to believe that he would have caused some serious casualties or at least a hasty retreat leaving behind mountains of supplies for the Axis forces to give the 8th Army under Montgomery a serious blow being able to concentrate there efforts against them while the Yanks regrouped and resupplied.

Just to summarize it and keep things from becoming complicated Rommel given control of all units he wanted for the offensive through the Kasserine Pass, What would the outcome be of that offensive? And if your up to it how may it have affected future operations?