Regarding the article,
""AMR Corp. has been a chronic underachiever, particularly in generating revenue," he wrote."
I can't recall AA having a revenue problem.
Regarding the B777's to LHR, AA had already started to fly B767's to LHR. If AA calculated that certain flight(s) with the B777 weren't profitable or were doing poorly, they could have easily switched to the B767s.
One thing not mentioned in the article however is that according to this, AA's cost basis is going to start going up quite a bit:
"Five weeks from now, after an 8 percent pay raise, our hourly pay rates will be 12.3 percent higher than when AMR filed bankruptcy. In January 2015, we will receive another 3 percent raise followed by a January 2016 move to the average of pay rates at Delta and United, which we estimate to be another 15–16 percent improvement. With 3.5 percent raises in 2017 and 2018, our pay rates will be higher than those at Southwest, Delta and United, and our 777 captain rates will be 10–12 percent higher than the highest pay rates currently at FedEx and UPS."
http://aviationblog.dallasnews.com/2013/11/apa-were-in-a-dramatically-better-position-than-any-of-us-imagined-two-years-after-american-airlines-entered-bankruptcy.html/
So in the next 5 years, AA will have an
18% pay increase and wages
will be higher than when it filed BK, that to me doesn't sound too good in terms of expenses.