You're on a new-thread making spree. Can you just combine them all and call it "general rogue questions"? Oh, wait, there are threads called that. Please post your questions in one of the numerous rogue related threads.
Anyway, I'll try to actually be helpfull. Since crusader for a fury warrior is up about 25% of the time on offhand, I would guess that AGI on offhand is more usefull.
Stop posting. Simple mechanics questions like these can be answered by browsing, oh, say, one of the nine gigantic rogue/warrior mechanics threads. People have spreadsheets that will answer the questions for you, even.