The Italian and north african area completely, though more heavily contested for sure, would have ended up in the hands of the British and the americans. Once the Vichy surrendered to the americans, and the americans started sending supplies to the theatre, the germans and the italians lost hope. i mean the italian divisions had horrible combat records for the most part, because regardless of the war, italy was in turmoil, and there were already plots to overthrow mussolini. The regia aeronautica was hopeless compared to the royal air force and that of the americans. The fighters were improving yes, but the aircraft werent produced in the numbers needed, and everything was always in short supply. They lacked adequate tanks and vehicle transport, making advances and retreats too hard, because they werent a mobile force. The german afrika corps, lead by erwin rommel, while a crack force was always short of supplies, logistical problems and land transport being a huge problem. They never had enough sea transpot either, and malta based british aircraft were taking there toll on the ships. They couldnt have pulled off reinforcement fast enough after the soviets were defeated, not enough to do anything but prolong the conflict a little. Even if they got the initial men and matieral there, there wasnt enough fuel to go around yet, and distribution of russian stocks by a germany without overland or airborne and sea transport in plemtiful supply in the medditerranian theatre, it wasnt looking good.. My view