Two forwards finishing a season on the same number of goals creates a problem with no obviously correct answer. How each competition resolves it reveals what the award is understood to measure.
Sharing treats the goal count as the whole question
Most domestic top-scorer awards are simply shared when players finish level, and multiple names appear against a single season.
The logic is that the award recognises a total, and two players who reached the same total have equal claim to it.
It also avoids inventing a criterion after the fact, which would look arbitrary applied to a race that has already finished.
Tie-breaks introduce a second question
Where a tie-break is used, the usual measure is minutes played, awarding the trophy to whoever reached the total in less time.
That is a defensible rule, but it changes the award from a measure of output into a measure of efficiency partway through the process.
A player who started every match is then penalised relative to one who played fewer minutes, which is not what the competition advertised.
Assists have been used as a separator
Some competitions break ties using assists, on the reasoning that the better attacking contribution should decide it.
This introduces a measure the players were not competing on, and assists are recorded inconsistently between leagues and providers.
It also rewards a role rather than a skill, since a forward in a team that plays through him will accumulate assists a poacher never can.
Multi-league awards need a rule regardless
An award drawing on several competitions cannot share indefinitely, because the pool of candidates makes ties more likely rather than less.
Weighted systems that multiply goals by a league factor produce fractional totals, which makes exact ties rare almost by accident.
That is a side effect of the weighting rather than a designed solution, and it has quietly removed the problem from the competitions that use it.
Why shared awards read differently later
A shared trophy appears in records as a full win for both players, and the fact that it was shared is often lost in summary.
Career counts of top-scorer awards therefore treat shared and outright wins identically, which flatters some records over others.
Anyone comparing two forwards on trophy counts is relying on a number that was produced by whichever tie-break convention happened to apply.