[Phoenix-D]

"Sure, it didn't have any systems that were specifically weapons, but the effectivness of any reaction mass drive (as their engine was) as a weapon is directly proportional to its"

Effectiveness -as a weapon-..that doesn't mean the ship would be considered armed. It is entirely possible to kill with a pencil; most people wouldn't consider a man holding one armed.

And reaction drives as weapons only works when the target can't get out of the way.