Who's supposed to be thinking "It has no effect, we could fire the mana cannons in one blow"? It seems kind of disjointed, since they just cut/deflected the enemy's mana cannons but didn't ever do anything with their own.
Also it's missing a page or something (a panel's mostly cut off right after "Inverse... was it called?")
Good to see captain wreck the other guy so easily though, although I doubt he's staying down.