Why NTR couldn't do it? How Allu Arjun has done it?

The much hyped films of the year 'Shakti' and 'Badrinath' has failed to meet the expectations of the audience. Though both the films suffered a negative talk, Badrinath recorded staggering collections in it's first week. But, Shakti has bite the dust and also incurred huge losses to Producer, distributors and exhibitors. Critics rate 'Badrinath' as a film slightly better than 'Shakti', and nothing more. But, what's the reason for massive difference between the collections of these two films? Is the star power that made the difference? Though Junior has a good fan base in AP, Shakti couldn't manage to collect reasonable amount. On the other hand, Bunny has good fan base in Karnataka and Kerala along with AP, which eventually converted into record openings for Badrinath allover. Is this the sign for growing popularity of Allu Arjun, or the downfall of NTR? Let's not get into any conclusion right now. Hope NTR will be back with a bang!