You are correct. IMHO Delta at least thinks it has more at risk as it tries to preserve what it thought was a good deal with NWA's Fith Freedom rights.
Back before the DAL / NWA merger, I tried to explain to people here why Narita and 5th Freedom was not the golden egg that some made that operation out to be. Now, at a year after the DAL/NWA merger we have shut down the Cargo operation and are unsuccessfully trying to throw ~$500,000,000 into holding on to a concessionary position in the Japanese market.
The 787 and changing economic patterns will drive changing traffic & revenue flows.