Wow I definitely didn't think lax to jfk was under 5 hours!
Sudden thought - why didn't you use Mint? :-)
Anyway another thought as I read your check-in pictures... WE NEED MORE PICTURES OF SFO777. Sorry for shouting but...
Finally since you did fly AA on return, will you stop booking them for the rest of 2017? I can understand that you may already have them on upcoming itineraries.
My "bad" experiences on AA and UA are the main factors for avoidance when I book my 2-4 annual trips... but maybe it would differ if I flew more.