The Divine Energy
From ancient ages till today, only the Tamilians or the Dravidians have been getting Arul, Marul and Sitthu Vilaiyaadal. In this matter, no other race could compete with them so far.
In reality, the Divinators from non-Dravidian races always suffered on account of their loss of divine powers in all the above mentioned Arul, Marul and Sitthu Vilaiyaadal. On the other hand, the divinators from Dravidian races never suffered from loss of divine capacity within their life-time.