Regarding Lucky7´s post, I don´t see any solid arguments backing up his claim. It seems to me that he is mostly rambling. I understand that he is expressing his opinion which is fine, but hopefully there was somebody overthere who challanged his assertions.

SC is right. Back then Gigante had a reputation of somebody who had been hit too many times on the chin. I guess as a former boxer, and not a very good one, contributed to this reputation.
Don´t get me wrong though. As a boss, he seems to have been as smart and clever as any other boss throughout Mafia history.