How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 9/25100.0*Chance in playoffs100.0*Average seed
Scotland 39 United States 16 -2.9
-0.1
South Africa 46 Samoa 6 -0.8
-0.1
Week of 10/2100.0*Chance in playoffs100.0*Average seed
Samoa 5 Japan 26 +20.7
+0.9
South Africa 64 United States 0 -10.6
+0.1
South Africa 34 Scotland 16 -5.8
-0.1
Week of 10/9100.0*Chance in playoffs100.0*Average seed
Samoa 33 Scotland 36 Out
-0.2

What If

Chances based on how well the Japan finish out the regular season.   Explain

100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-OTLTplayoffs12345Count
8-12Out100901,705,920*
Total:Out100901,705,920

* Row combines multiple less frequent records.

Points
Chance Will Make Playoffs

Lottery

We are out of the playoffs. Here are the big games and what ifs for draft seeds.
Although it might be more fun to go down swinging.

Big Games

Week of 9/25100.0*Lottery seed
South Africa 46 Samoa 6 +0.1
Scotland 39 United States 16 +0.1
France 41 Canada 18 -0.1
Wales 23 Fiji 13 -0.1
Tonga 35 Namibia 21 +0.0
Italy 23 Canada 18 +0.0
Week of 10/2100.0*Lottery seed
Samoa 5 Japan 26 -2.6
New Zealand 43 Georgia 10 -0.1
South Africa 34 Scotland 16 +0.1
England 13 Australia 33 -0.1
South Africa 64 United States 0 -0.1
Namibia 16 Georgia 17 +0.1
Canada 15 Romania 17 +0.1
Week of 10/9100.0*Lottery seed
Samoa 33 Scotland 36 +0.3
New Zealand 47 Tonga 9 -0.3
England 60 Uruguay 3 +0.3
If winner is:HomeTieAway
United States vs Japan+1.2+0.1-1.3
Argentina vs Namibia+0.2+0.1-0.2
Italy vs Romania+0.1-0.3+0.0

What If

100100100100100100100100100100100100100100100100100100100100
If finish:Chance will finish season at seed
TPW-OTLT1234567891011121314151617181920
121-0004555
100-001793
80-010185626
Total:2025202411