@Nico16: I don't agree with your opinion, but that's ok. What I wanted to point out is: When was the last time that the "better" band decided who was headlining?
Easy answer: never.
And not that it matters much, but the tour has generally been listed as Nile w/ Arch Enemy, not the other way around.
maybe they're both headlining, who knows? well, AE is a great live-band anyway...the "Burning Japan" live album rules
it must be kinda hard for Nile to reproduce the atmosphere of the albums...