Your chart is not right twestern. Frequent forum goers that are JRPG fans are only a handful amount of people, only a representative amount of the global amount of JRPG fans. Sales would be much much lower otherwise
Think it like this, take the amount of frequent forum goers which are a representative amount of hardcore gamers. Among them there are, say, 10% of them being JRPG fan. Apply this percentage to whole number of hardcore gamers and you have the amount of JRPG fans.







