Once all run values are calculated, a weightage system is applied. For a given player:
their most valuable run keeps its full value;
their 2nd most valuable run is multiplied by 0.99;
their 3rd most valuable run is multiplied by 0.99²;
their 4th most valuable run is multiplied by 0.99³, and so on.
The multiplier will not fall below 0.25; so once it reaches that point (at 0.99¹³⁸ ≈ 0.2498), all subsequent runs will simply have their values multiplied by 0.25. The new values are then summed to get the player's total point value.
These weighted values are only used in 'Player Rankings' tab; all other tabs always use the full values of the runs.