Now that the West is more competitive will the Spurs still win another title?

Shaq is on the Suns, Jason Kidd is on the Mavericks, and all these other major trades Garnett gone to Celtics along with Allen and Pierce. Will the Spurs still reign supreme? Also, is Tim Duncan considered an NBA Legend yet? Hall of Famer, Yes, but NBA Legend? Example: Bill Russell, Wilt Chamberlain, Kareem Abdul Jabbar. What do you think on both questions.