Table:
text: NFL starting quarterback playoff records
Starters for 2 different teams
Quarterbacks Sorted by Win Percentage
Quarterback Games Teams Wins Losses Percent_
Trent Dilfer Category:Articles with hCards 6 Buccaneers 1 1 .833
Trent Dilfer Category:Articles with hCards 6 Ravens † 4 0 .833
Earl Morrall Category:Articles with hCards 5 Colts* 2 1 .800
Earl Morrall Category:Articles with hCards 5 Dolphins 2 0 .800
Jeff Hostetler Category:Articles with hCards 5 Giants † 3 0 .800
Jeff Hostetler Category:Articles with hCards 5 Raiders 1 1 .800
Tobin Rote Category:Articles with hCards 4 Lions* 2 0 .750
Tobin Rote Category:Articles with hCards 4 Chargers~ 1 1 .750
Joe Montana Category:Articles with hCards 23 49ers** 14 5 .696

text: NFL starting quarterback playoff records
Starters for 2 different teams
Quarterbacks Sorted by Win Percentage
Quarterback Games Teams Wins Losses Percent_
Peyton Manning Category:Articles with hCards 20 Broncos 0 1 .450
Jim Harbaugh Category:Articles with hCards 5 Bears 0 1 .400
Jim Harbaugh Category:Articles with hCards 5 Colts 2 2 .400
Vinny Testaverde Category:Articles with hCards 5 Browns 1 1 .400
Vinny Testaverde Category:Articles with hCards 5 Jets 1 2 .400
Michael Vick Category:Articles with hCards 5 Falcons 2 2 .400
Michael Vick Category:Articles with hCards 5 Eagles 0 1 .400
Randall Cunningham Category:Articles with hCards 9 Eagles 1 4 .333
Randall Cunningham Category:Articles with hCards 9 Vikings 2 2 .333
Jack Kemp Category:Articles with hCards 6 Chargers 0 2 .333
Jack Kemp Category:Articles with hCards 6 Bills~ 2 2 .333

Question: What are the average wins when the percentage is greater than .4 and the teams are Chargers ~ under NFL quarterback playoff records by ranked starters for 2 different teams?