User blog comment:SilencedSkies/Body Armor: A Comparison./@comment-5020188-20130211160238

Some things about the Aquila armour: Its carried by Space Marines. Not just the Ultramarines. Secondly, the space marine physiology is resistant to radiation and damage. Thirdly, im pretty sure you cant detonate the backpack, it would have been in one of the books or the codex. Finally, Space marines use ALOT of two handed weapons in that armour.