iow, you and others can't debate the demonstratable fact that DL has done a better job of pushing into key AA markets including in Latin America and LHR than AA has done in key DL markets.
Further, AA DOES have a niche market strategy in NYC - other AA fans on here have said as much - and yet they keep thinking that AA's presence in NYC will be an exception to the long-standing principles of airline economics that the largest carriers enjoy a revenue premium due to their size while AA has shrunk its presence in the face of increased competition from B6, DL, and UA.
further, AA's JFK transcon strategy is a niche market strategy that was created before B6 started its Mint service which has dramatically reduced fares in the premium cabin while DL and B6 particularly have increased capacity in the entire NYC transcon market.
So, AA's fundamental principles of seeking a niche position in the JFK transcon markets is fundamentally flawed and UA's departure from the JFK transcons should raise concerns about the viability of AA's strategy.
add in that AA has an aircraft strategy that uniquely uses one aircraft configuration for 2 markets that are rapidly changing and don't work even in other transcon markets, and it should be clear that AA's strategy is vulnerable to competitors.
so, spare us the personal attacks and just deal with the market-based facts and analysis.
or admit that someone understands the industry and can see where it is going better than others who post here.