How are pc game rating different than tv ratings?
I think it's more of a general observation. It seems to be a cultural thing from what I can tell, where the US has a thing that violence is fine but sex and nudity are unacceptable, much of Europe is the other way round and the UK is somewhere in the middle, being neither desperately keen nor massively disapproving of either.
I can confirm that.
I am from germany, some examples:
- All nazi symbols are forbidden, usually they get replaced by other symbols ( Is any Wolfenstein game legal in germany? )
- In some games human enemies have been replaced with robots ( Turok 1 ). Killing realistic looking humans is bad in general, but in fantasy, comic or Pixel art style almost everything is allowed when it does not look realistic.
- Some games removed blood or the blood changed color to green or yellow ( Turok 2 )
- Dismembering enemies is really bad, no removing of body parts ( some Mortal combat games, especially finish moves )
- I think censorship got less over time. Many games fom the 90s were censored ( I played N64 then ), but in Dragon Age Origins your cloth are full of enemy blood and The Witcher 3 can get very brutal.
- America seems to be the other way round: violence is OK but naked skin is not.
For Gothic 1 (RPG from germany) they had to add more cloth to woman to sell it in america.
- Australia seem to have a lot of censorship. Many games were forbidden or heavily consored.
- Sometimes players are really paranoid and see censorship everywhere, even when there is non.
Some people got angry at the devs of Trails of cold Steel 3 because they said they had to change some text because some jokes or references made no sense when translated literally. Thats exactly what good translators schould do.
I see no big problem for BG3. Its a fantasy RPG, so unless they use sex or torture scenes that look realistic like a movie it should be fine.
The intro movie was quite brutal, so I guess the age rating could be 16+ years. Sorry I do not know the different rating systems for different countries.
PS:
I absolutely respect the devs of South Park: Stick of Truth.
They had to remove some stuff but you can always see what has been removed. In germany the nazi zombies have black bars over their symbols and in some countries they had to remove some scenes completely. They are replaced with a text that describes what has been removed.
Prof. Dr. Dr. Mad S. Tist 
