The problem with your formulation is that 'better' is perhaps the most subjective word there is. Define it in measurable terms, and perhaps you have a reading there. There are many factors to consider which may lead you to find things less clear-cut, for example here's one or two, with some sub-factors
- Modern audience Preference for familiar patterns in: (eg)
-- acting styles
-- music used
-- visual tricks and norms
-- special effects styles
-- acting styles
-- soundtrack loudness
-- colour and high resolution
-- High Concept movies
-- Fantasy and Comic-related films
-- modern movie themes and topics
- Internationalisation of movies, so that fans from abroad prefer modern films which are more universalised and less American-specific (see literature)