How are these numbers calculated?

Big Games

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

Week of 3/29100.0*Chance in playoffs100.0*Average seed
Josh 208.8 Joe 148.6 +3.0
+0.9
Matt 188.2 Luke 161.3 +1.4
+0.1
Jeb 184.1 Harry 201.2 -1.0
-0.1
Mike 205 Ken 230.9 -0.3
+0.2
Ross 184.3 Jason 96.4 +0.3
+0.1
Robby 170.8 Jon 132.5 -0.1
Week of 4/5100.0*Chance in playoffs100.0*Average seed
Robby 170.5 Josh 198.5 +5.2
+1.2
Harry 229.4 Luke 200.6 -1.8
+0.1
Jason 159.3 Jon 181.8 +0.4
+0.2
Matt 203.7 Joe 187.5 +0.3
+0.2
Ross 226.7 Ken 218.4 +0.1
Jeb 179.1 Mike 192.2 -0.1
If winner is:HomeAway
Week of 4/12100.0*Chance in playoffs100.0*Average seed
Jason vs Ken+3.9Out
-0.4+0.3
Josh vs Jon+3.9Out
+0.4-0.4
Harry vs Joe+3.9Out
+0.2-0.2
Mike vs LukeOut+3.9
+0.3-0.3

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
61-07.8%8662338,999,615
50-1Out255015108,999,929
Total:3.9%446369517,999,544
Games Above .500
Chance Will Make Playoffs