That's why the summaries exist. A parent can read the summary for Little Big Planet and then decide to let their child play the game regardless of the rudeness.
Why did it take a study to find that everybody has a unique body odour? It isn't much of a discovery, did anybody actually think that we all smell exactly the same before this?
High power bass moves around a lot of air. Headphones are very close to your ear, and get the same intensity as distant speakers with much, much less power. Most headphones can give good bass response.