Ok, I have something else to say:

This is not instantaneous warfare. You cannot prep and fire in a single moment. For a people who are so TOTALLY into magic, how the hell did you even discover and utilize anti-matter? It'd be a terrible, insanely huge investment to effectively isolate and use antimatter unless you intend to mass produce it- you say yourself that you're ALL MANA AND MAGIC

So 
A) Where the fuck did the antimatter come from
B) How the fuck did you transfer the highly-unstable highly-volatile substance with its containers into a shuttle
C) How the crap did you rig the shuttles for remotecontrol so quickly?