So far, only 3 actresses have had the luck to act with both Surya and Karthi. Namely, Tamannah, Kajal Agarwal and Anushka. Anushka recently told the media about them both and how she notices the differences between the brothers.
Anushka said that while Karthi is a chatterbox who socializes easily, Surya is quite reserved and keeps to himself. Karthi is also a better singer than Surya according to this actress. The interesting difference is that Karthi likes to scare people with ghost stories and Surya detests horror of any sort! The final difference she spotted was that Karthi attracted kids more than Surya. An interesting chat indeed.