If you compare a 2 vs. 2 battle (2 creatures of the same type, for example, 2 War Hydras (1 in each stack) and 2 Phantom Fiends), then the Archdevils win due to resurrection. In general, in a 1 vs. 1 battle (with creatures of the same rank, for example, both are Veterans), no one can compete with the Antichrist.
One Archangel cannot resurrect another Archangel.