Yea I get that, and Im sure they thought of the new album and said we should let them headline because of that. And I still think neither one is better than the other. They're both good.
I feel like the AA guys got together and said "What should we call our next headlining tour?" and then named it after the album, and then found the support bands. I doubt whoever is running this tour had the lineup all figured out and said "Okay, which band should be headlining? Well, Asking Alexandria has a new album coming out!" I could be wrong, but I don't see it working like that.