Player rating for tournaments across all installments of Heroes.

The second point is indeed very difficult. But it is precisely what provides the objective level of the tournament

Let's consider 5 stages of VK:
1. The winner had 12, and if 11 was even possible, then everything depended on the AI behavior.
2. 7 out of 7
3. 7 out of 7
4. 3 out of 3
5. I assume that the map is completed in 7 days (well, no more than 8), the winner had 9. I failed to implement what was intended only due to a huge lack of time (I only had one evening). Plus, I was unlucky with the generations (if I had been lucky, I would have managed even in one evening).
So we see that in at least 4 out of 5 Tournaments (and maybe all 5, if I am mistaken about Heroes 5), the winners did everything perfectly. And I think this is not a coincidence, but a pattern. Consequently, the minimum completion correction can be ignored; it is far too poorly defined.