As long as the rear-guard action was fought in Tunisia, Mussolini remained the Duce of Italy.
On July 10, the Allies landed on the Italian homeland territory. On July 26, Mussolini was no longer the Duce. Rather quick an ousting.
While it took Badoglio some time to organize the great turning of the coat, the writing was on the wall, and anyway it took just slightly more than one month.
Had Badoglio not done a dog's dinner of this drill, the outcome might have been way worse for Germany, not only in Italy but in the Balkans and some Greek islands too.
The above alone is reason enough to try and delay the Allies in Tunisia rather than in Sicily (or Sardinia).
On July 10, the Allies landed on the Italian homeland territory. On July 26, Mussolini was no longer the Duce. Rather quick an ousting.
While it took Badoglio some time to organize the great turning of the coat, the writing was on the wall, and anyway it took just slightly more than one month.
Had Badoglio not done a dog's dinner of this drill, the outcome might have been way worse for Germany, not only in Italy but in the Balkans and some Greek islands too.
The above alone is reason enough to try and delay the Allies in Tunisia rather than in Sicily (or Sardinia).