I like the way this movie tackled the subject and how it played out on the screen.
While the two gangsters were very typical, cut from the same cloth one would expect them to be, and even willing to resolve problems the only way they knew how, still they were taught a valuable lesson. On the other hand, while yet maintaining their Italian roots, the 'cousins' were very much Irish and followed their own traditions and values. Following real life, sometimes the misguided perceptions of those outside of a group can be so pervasive, that even those belonging to that same group adopt those ideas about themselves. They then turn around and judge their peers within the group using the same measuring stick, wrong as it is. Anyone who strays away from that is looked at as strange or even worse ostracized. The 'stamp collecting' scene is one good example of this.
Otherwise the movie was good with competent acting. The subtlety of the emotions of the characters as they progressively learned more about themselves from their cousins was quite well done by the lead actors - even Dan Hedaya toned down some of the usual facial Dan Hedayaisms. While it was based on the same love triangle theme seen a jillion times before, it was done differently here and in a unique setting - at least to us North Americans. Check it out.