[quote=Sep]Well not planet killer but extreme weapons. Like Andromedas weapon capable of destroying a continent the size of Australia and the Covenants glassing weapons.[/quote]

The Covenant can glass a planet, but the UNSC cannot the last I heard. In fact calcs wise - around low megaton, they're below Star Trek, and not much above Mass Effect. If you go by the weapon descriptions they're not using anything we''re not now. The outlier is the nova bomb.....which is not general ordinance.