Why did BJP spend crores on newspaper ad if it's confident of winning all Upper Assam seats: Congress

The Congress has lodged an FIR against chief minister Sarbananda Sonowal, BJP chief J P Nadda, state president Ranjit Kumar Dass and eight leading newspapers for "camouflaging an advertisement as news" predicting the saffron party's victory in all the seats in Upper Assam.

source https://timesofindia.indiatimes.com/india/why-did-bjp-spend-crores-on-newspaper-ad-if-its-confident-of-winning-all-upper-assam-seats-congress/articleshow/81746291.cms