Back when the BBFC (British Board of Film Classification) rated games here in the UK, which ended July 2012, they also gave the first Dragon Age: Origins game an 18 rating.
The first Dragon Age game was definitely a bit more brutal than the 2 games that followed it....especially as it did have head decapitations during the combat gameplay.
But even with that....I still felt the BBFC 18 rating was too harsh.
They gave Skyrim the BBFC 15 rating back in 2011....and that game actually had close up decapitations and throat cut finishing moves!
However last year, the remastered PS4 and Xbox One versions of Skyrim got the PEGI 18 rating!
There was, for a very brief amount of time during the transition from BBFC to PEGI, that both would rate the same game. I remember seeing a BBFC 15 and PEGI 18 on the same game disc!