There are many reasons why a film becomes successful but if you are to shortlist the key elements then the hero and the title hold top spots. A hero has the power to be a crowd puller even if the content is average and the execution is mediocre. Secondly, the title decides what type of audience will come.
The best example to quote in this instance is the recent release Seethamma Andaalu Raamayya Sithraalu. The title per se has appealed to many family audiences and given the fact that it is a story based on rural backdrop, it attracted the B, C center audience in a big way.
On the other hand, hero Raj Tharun is currently riding a success wave with a hat trick string of hits and his native mass youngster character has struck a strong chord with the youth and mass audience alike. The film has now managed to touch the success mark despite an average talk due to the hero power and title effect.