Re: Picard was right, Sisko was in the wrong..
If the Cube had of got to Earth they might not have been much safer there.
No one on Earth died during that engagement. Nearly everyone on a Starship did.
"You have been examined. Your ship must be destroyed. We make assumption you have a deity, or deities, or some such beliefs which comfort you. We therefore grant you ten Earth time periods known as minutes to make preparations."