The Jets and Rams were such a mess as organizations that I don't think it's a fair representation, except that it has shown he has dealt with a lot of adversity.
Let's take a look at what Brian did as an NFL QB coach. After all, some people wanted the Seahawks to hire John DeFilippo, a QB coach with little to no experience calling plays.
2002 Chargers - #9 Total Offense, #20 Points Per Game, #22 Passing Yards, #23 QB rating
2003 Chargers - #4 Total Offense, #16 Points Per Game, #19 Passing Yards, #21 QB rating
2004 Chargers - #10 Total Offense, #3 Points Per Game, #16 Passing Yards, #3 QB rating
2005 Chargers - #12 Total Offense, #5 Points Per Game, #12 Passing Yards, #6 QB rating
2016 Colts - #10 Total Offense, #8 Points Per Game, #5 Passing Yards, #10 QB rating
2017 Colts - No Andrew Luck, not even going to bother looking this up.