Well as far as I know, the movie has surprisingly holding on well in Tamil Nadu... It's Andhra/Telangana where the movie crashed badly becoming a big loss maker. In Tamil Nadu, I believe Kabali is now the highest grosser.
Not sure about the Karnataka although I think in some centres the Tamil version might've had some sort of hold through the first week. As of now, Kabali is way down in Karnataka. What BOI meant is solely for the initial business (huge business) Kabali did in Karnataka & Kerala.
Thankfully, the Tamil original version has outperformed itself considering it's weak content. Highly surprised. It's an achievement by itself that the film wasn't rejected post the first weekend. Feel good for the superstar for Kabali not going Lingaa way.