"As you can see from the Italian equipment, this would end in massive Italian slaughtering."
It was actually worse than that. They mainly had infantry there. Quoting a T-34 tanker (battalion commander):
"Когда починились, догнали наших. Пришли в район, никогда не забуду, казачьего хутора Хлебный. В 3-х километрах другой хутор – Петровский. Его тоже заняли советские танки, но не нашей бригады. Между хуторами, расположенными на холмах, пролегала низина. Рано утром по ней, огромной сплошной толпой пошла, спасаясь из окружения, 8-я итальянская армия. Когда передовые части итальянцев поравнялись с нами, по колоннам пошла команда «Вперед! Давить!». Вот тогда мы им с двух флангов дали! Я такого месива никогда больше не видел. Итальянскую армию буквально втерли в землю...
...Взяли толпы пленных в этот день. После этого разгрома 8-я итальянская армия фактически прекратила свое существование, во всяком случае, я ни одного итальянца на фронте больше не видел."
In English:
"After repairs, we caught up with the rest. I will never forget how we arrived at the area of cossacks village Khlebnyj. Another village in 3 km - Petrovskij. Also occupied by soviet tanks, but not from our brigade. Between the two villages sitting on the hills, a ravine was located. Early in the morning, a continuous wave of Italians form the 8th army went, trying to escape encirclement. When the head of the enemy group reached us, a command went to all of our columns - "Attack! Crush!" That's when we hit them on two flanks. I never saw a bigger meat-grinder in my life. The Italian army was literally ground into the ground....
...Took huge amounts of prisoners that day. After the defeat, the Italian army ceased to exist. At least I never saw a single Italian in the war since then."
It is not possible to make a balanced and realistic scenario out of that. However, as has been correctly suggested previously, a scenario in 1941 would be much better with Russians and Italians well matched in equipment and strength.