Player rating for tournaments across all installments of Heroes.

Show me just one real tournament where the leader finished in 89 days, and I'll start the calculations.

If they accept your system, which hasn't been tested on all possible scenarios, sooner or later it will fail. And how often do you see tournaments with results of 3, 6, etc.? You're proposing a system that should always work, no matter what. However, since we're discussing theory, I ask you to provide a calculation for the scenario I proposed. These sometimes happen. We'll wait.