Halo firepower II

[Picard]

Well, going off PoA 64 kt MAC yield (since it seems reasonable for fusion-powered ship using giant railgun) I got (read:guessed) 100 kt for Marathon MAC (it has two of them, and more advanced fusion reactors than PoA - plus it doesn't fire 3 shots, so it might rise to 200 kt per MAC), 4 Mt for ODP round, 2 kt for Archer missile, 30 kt for Shiva missile (otherwise using Archer instead of Shiva would be just insane). Lot of guessing, but still - hull of Covenant Assault carrier got pierced by kiloton-level projectile in HALO 3, and earlier in Halo 2 by Longswords, so it might be reaonable - and ODP is stated to be able to destroy 2 battlecruiser with shields up sitting one behind other. That would put 2 Mt shields for CCS class (in order to have it tank hundreds of missiles, yet be vulnerable as described to ODP), 20 Mt for Assault Carrier (it should be able to take few hits by ODP's in order for stunt Prophet of Regret pulled at Earth to work), and, with utter and complete guessing, 600 kt for destroyer and 300 kt for frigate. Thoughts?