Another possibilty is that audience scores are easier to gamify via the use of bots relative to critic scores (which I assume are limited to identified critics

Another possibilty is that audience scores are easier to gamify via the use of bots relative to critic scores (which I assume are limited to identified critics who work for major media outlets). One way for a movie's PR/advertising group to generate buzz is to flood rt with positive movie reviews for example. I suppose you could detect this by correlating individual movie advertising budgets with rt audience scores across the board?