If the online page can identify which version a person has, can it not choose to ignore the stats? It isn't at all an issue for those with the cheaty version to upgrade to a non cheaty version I assume? There must be a 'sense' check that can be done based on certain parameters too.

If the average fish selling price exceeds the selling prices possible in the game then surely those results can be removed.

This problem otherwise has the potential to kill the online stats completely - who can compete against those numbers?