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
Papua New Guinea 1 New Caledonia 1 +9.9
+5.5
+0.4
Vanuatu 0 New Zealand 5 -0.6
+0.9
Tahiti 4 Samoa 0 -0.3
-0.1
Vanuatu 0 Solomon Islands 1 -0.1
-0.1
New Zealand 3 Fiji 1 -0.1
-0.2
If winner is:HomeTieAway
New Caledonia vs Samoa+16.7-20.4-30.2
Yes+10.5-54.2
+0.8-0.6-1.7
Papua New Guinea vs Tahiti-8.1-6.3+9.1
-0.8-0.3+0.8
-0.1-0.0+0.1
Solomon Islands vs Fiji-0.7+3.2-0.8
+0.6-0.7-2.8
-0.0+0.1-0.1
If winner is:HomeTieAway
Week of 6/4100.0*Chance in playoffs100.0*World Cup Qualifying100.0*Average seed
Tahiti vs New Caledonia-21.8+14.2+47.5
-5.7-1.0Yes
-0.7-0.0+1.9
Papua New Guinea vs Samoa-3.8+11.0+13.4
+0.4-1.7+0.1
-0.1+0.2+0.2
New Zealand vs Solomon Islands+1.9-1.3-3.8
+0.0-0.0-0.1
Fiji vs Vanuatu-1.5+2.0+3.2
-1.0+5.9-2.2
-0.0+0.1+0.0

What If

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

100100100100100100100100
If finish:Chance inWorld CupChance will finish regular season at seed
TPW-OTLTplayoffsQualifying12345678Count
72-000InYes12721518,362,725
51-00194.8%Yes22369509,027,035
41-01039.1Yes033656525,483,420
30-0027.199.2%076230101,921,374
20-0110.472.1012602718,886,375
10-020Out6.20682128,036,079
Total:43.9%83.7%210725271215261,717,008
Points
Chance Will Make Playoffs