I call Bullshit on this unjustified wanking of Tyrant. So he's a herald killer. Big whup. Darkseid makes herald killers and commands several himself.
Darkseid has better and bigger feats. He's faced down and fought greater groups, like the JLA and the LSH. Not to mention Secret Origins.
"As with most of the weapons and artifacts from the higher vibratory world of the new gods, we see only facets of the barely imaginable whole that is the complete Anti-Life Equation."
New Gods have not been seen in their true forms ever on the normal universe.