Even if Vito did not go to jail, the Violi brothers and the Cotroni loyalists would eventually look for revenge, specially with the rise of the 'Ndrangheta families and their potential backing. The Rizzutos would have fared much better that's for sure, but a war would have happened eventually.
I agree the honour of the Violi family was at stake. That's the risk the Rizzuto took when they let the sons live.
