I would agree on principle but really all that matters is that Delta makes money. Wholly owned or not, whoever does the best should get it. Then Delta doesn't end up fighting in court (and subsequently spending money) after contract specs are not met. If the aircraft are operated properly in the first place that never happens...

Purely my opinion. I don't claim to know the whole picture, nor do I intend to try to find out what it is. I think my head would explode.