The Irish men tended to be loud mouths and liked to drink a lot. The Irish women were nicer AND many Italian men married them because sometimes opposites attract.

If you're talking about the Gangsters, The Italians wanted to take over and had much greater numbers of men who were smarter and more cunning. An Irishman could never be as cunning as an Italian. LOL. Obviously, the Irish were no match for the Italians. The Irish were better Cops and Politicians than Gangsters.