How are these numbers calculated?

Big Games

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

Week of 5/28100.0*Chance in playoffs100.0*World Cup Qualifying100.0*Average seed
Vanuatu 0 Solomon Islands 1 +25.5
+19.6
+1.4
Vanuatu 0 New Zealand 5 +1.8
+2.5
Papua New Guinea 1 New Caledonia 1 +0.9
+0.9
+0.1
Tahiti 4 Samoa 0 -0.2
-0.2
-0.0
New Zealand 3 Fiji 1 -0.1
+0.1
If winner is:HomeTieAway
Solomon Islands vs FijiIn+3.5-28.1
YesYes-8.4
+1.2+0.1-1.3
New Caledonia vs Samoa-0.4+1.7-0.3
-0.2+1.8-0.6
-0.1+0.2+0.0
Papua New Guinea vs Tahiti-0.7+1.0+0.3
-1.9+0.5+1.6
-0.0+0.2-0.1
If winner is:HomeTieAway
Week of 6/4100.0*Chance in playoffs100.0*World Cup Qualifying100.0*Average seed
New Zealand vs Solomon Islands-24.2-0.5+24.4
-8.4YesYes
-1.3-0.1+1.4
Fiji vs Vanuatu-5.7+1.3+5.2
+3.4+3.4-4.9
-0.1+0.1+0.1
Papua New Guinea vs Samoa-0.4+1.7-0.3
-0.2+1.8-0.6
-0.1+0.2+0.0
Tahiti vs New Caledonia+0.3+1.1-0.7
+1.6+0.6-1.9
-0.1+0.2-0.0

What If

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

100100100100100100100100
If finish:Chance inWorld CupChance will finish regular season at seed
TPW-OTLTplayoffsQualifying12345678Count
92-000InYes89113,274,307
71-001InYes37451712,800,302
61-01097.3%Yes423482236,538,019
50-00299.5Yes151470599,345
40-01139.1Yes043545162,799,940
30-0200.765.2%0117483053,274,023
Total:73.4%94.1%2216211410105119,285,936
Points
Chance Will Make Playoffs