That's because majority of players are normal players, even scout players are quite close to 5* players, they could even be worse if the 5* player's stats are very attacking. You don't see an Alex Zidane in every league, but if you did, he'd be top scorer for sure, this is an extreme case, though. I think that's the name of July's striker anyway.

I've yet to play against a team that power trains.