With who can be compared the fictional families with the real life families ?

Gambetti Crime Family • Gambino crime family
Pavano Crime Family • Genovese crime family
Messina Crime Family • Bonanno crime family
Lupisella Crime Family • Lucchese crime family
Ancelotti Crime Family • Colombo crime family

Pegorino Crime Family •Decavalcante crime family

Vercetti crime family is Trafficante family ?

http://gta.wikia.com/wiki/Mafia