Are video game scores over inflated?

Metafuture has some interesting data about video game scores from Gamespot and IGN. Gamespot (graph pictured) gave out 239 scores of a 7.0 out of a total 7,244 reviews. Also Metafuture points out how the bell shaped curve tilts on the right hand side. Considering how Gamespot qualifies a 7.0 as “good” and 8.0 as “great” are most games great? Or are scores being over inflated? Also do scores really mean anything? Hop over to Metafuture for the data on IGN.