24 more games for 9 more goals isn't massive, it says, they both suck.
Disagree, Sotirio is 3 times more effective than Appiah, a goal every seven games cf a goal every 21 games.
Agree with Barrie, the average per game is in favour of Sotirio (0.14 goals per game for Sotirio vs 0.05 goals per game for Appiah).
It would be great to see a distribution table or graph as to when the goals where scored (years ago, or recently), if there were peaks or troughs. If one of them scored mostly in a debut year while the other in their most recent season that would be also more predictive if they are rising or waning.