I don't think the ratings are supposed to be read as a competition between different films but how a film is judged in terms of the goals it has set for itself or whether it satisfied its own audience – not whether Batman is better than The Godfather.
Regardless of if you use the scores these websites give to decide on what film to see, the fact is these numbers do impact film viewing for a lot of people. This is one of the reasons we have 8 (BLOODY EIGHT!) Fast And Furious films. I'm not sure where I'm going with this...but there is a point somewhere. I'll leave it to you to figure out.
Reviews rarely have that much of an effect on box-office – between 10-20% is the estimated range of possible financial impact depending on the film.
Much like brands such as Star Wars
, most audiences don't read the reviews of Fast & Furious
films before they go see them, or if they do, don't wholly deprive themselves of seeing a film they have set their mind on seeing. That series of films has well established itself with its audience so they know exactly what they're going to get before they see it – it's critic proof. Those films are successful because the audience wants them and continues to show support, not because they get good/bad reviews. Transformers
films get terrible reviews yet they constantly earn money.