Its all in the interpretation of what the class designer wants the rogue to be. Thief, Brigand, Ninja etc. are all, at least imo, the roots of the "Rogue" and it can mean any of those or a combination of which. But then it gets weird when the class designer makes a Rogue and a Ninja for example and.. then its just all kind of muddled and weird. I like the older D&D references even though Ive never actually played D&D.
While looking at that, can you check on Meteor's spread? Its my biggest rant about the class.