They're pretty damn big. [The Diplo, being an intergalactic diplomatic flagship, was huge and still was dwarfed by the Invisible. He shook his head.]

Maybe 'destroyed' isn't the right word here. 'Removed from existance' might work better. It was as if the ship had never been there.

[He did sigh in irritation.]

...Look. Maybe I'm biased, but I'm really not too keen on putting him in danger and risking this information leaking out to those who shouldn't know. [It wasn't that he didn't trust your discretion, Vegeta, or else he wouldn't have bothered talking about it.] This is just a real wall for me here, and it's damn frustrating to know that I'm not gonna be able to offer much of an assist where it counts.