no what you cannot accept is that DL has a system fare premium over AA and every other large jet US carrier and customers are willing to pay more for DL's service than for that of any other carriers.
your comment about DL's service levels seems even harder to defend given that AA is eliminating first class on JFK-LAX, one of the most premium driven US-LHR routes.
http://airlineroute.net/2015/07/05/aa-jfklhr-dec15/
The 772ERs also represent a reduction in capacity.
You have clung to the notion that ice cream and cookies in domestic first class determines quality of service while the vast majority of customers actually want first and foremost reliable transportation of themselves by pleasant employees and DL delivers that in spades over its competitors including AA and UA from LAX.
The latest DOT consumer report shows that DL's on-time performance at LAX is 8 and 10 points higher than AA and UA at LAX and 11 points higher than WN.
http://www.transportation.gov/sites/dot.gov/files/docs/2015JuneATCR.pdf
DL's system baggage handling is almost twice as good as AA's and 50% better than UA's while DL's consumer complaint ratio is one-fourth that of AA and UA.
You have repeatedly ignored factual evidence including DL's own financial performance in the LAX-LHR market in order to make emotionally based charges including right here about service quality despite the fact that there is ample evidence that DL's service quality is far superior to AA and UA's.
If DL's quality was as bad as you claim it is, DL would not have reached average fares comparable to UA and at a share level half of AA and UA's in just the first quarter of operation of LAX-LHR - and that quarter happened to be the fall.
You have tried to argue that JVs aren't a valid means for DL to serve a market despite the fact that you have repeatedly relied on that argument to talk about AA's presence in key global markets including Japan.
No, MAH, the only clear evidence is that DL did in fact succeed in its expanded LHR markets but chose to reallocate capacity on its own metal from the int'l to domestic system, it has a JV with VS and agreements with its pilot group and a fleet strategy that allows it do so, and DL has the ability to make both VS and DL succeed because of DL's ability to reallocate markets given that VS has no domestic markets to which it can reallocate capacity and DL's ownership stake in VS gives DL knowledge of VS' entire network and finances.
Move along.
This thread is merely an attempt by you and others to try to paint DL as a failure and you can only do so by manipulating and ignoring key facts.