Too much hype
Sometimes, the excessive expectations on a film can be a burden by itself and can make the film seem less impressive. There is no better example for this than Suriya's Anjaan, which was massively hyped up that fans felt cheated when they saw that it was an usual revenge saga. Rajinikanth's 'Lingaa' also got extra criticism because of the extra publicity. The same thing happened with 'I' as well, to an extent. So, as we saw with Ajith's Billa II, even if the film is just above average, it could result in a backlash from disappointed fans.