78 is an above average score for me, nearly a great score.
However, when exclusivity is involved, people's perception can be altered. Xbox fans shouldn't be surprised that people call QB mediocre for scoring 78 when they called inFamous Second Son mediocre when it scored 80. It may be petty, but people remembr things like that.
And that is just one example, but it happens with parts of all fanbases.