Uhh... because they did everything they could with the Zuma to ensure the Zuma didn't destroy them all for something they were completely innocent of?
They weren't innocent. If you were innocent, then they wouldn't have attacked, would they? You must have done something to provoke them, even if we don't know what it was.
Also, Brance finds it curious, and rather odd, that Terran is the one making the big push to acquire the items that the Zuma want, with D'Hara also doing a little. It doesn't seem to us like Barca is doing anything at all to help themselves.
