They speak the same language, maybe with a light intonation and a different accent. Not any more diverse than Kovai and Madras Tamil. But here is a whole new culture and perspective. The quaint feeling of watching a foreign language movie in your mother-tongue. As my understanding of the Singaporean Tamil culture, at the cost of sounding politically incorrect, they seem more Tamil than the Tamil Tamils! This has led me to believe that it is the far-flung seeds that guard the roots vehemently.
A tight packed screen play, that has something to hide and reveal until the last moment. Perfectly etched characters, with distinct and consistent identities. Theme, handled with maturity and clarity. The one song in the movie, that blends aptly, with the flow. Lead performances, that bowl you over with their perfect rendition. Emotion in certain scenes, that becomes a character by itself. Most of all, the confluence of all these elements makes the experience much, much greater than the sum of it's parts.
A fine way to know your own in another land!