On first blush, I assumed that 50 Cent's comment was intended as (at best) a "left-handed compliment", if not a downright insult. On further review, however, maybe old 50 is making a point. A "gangsta" would never invest a crazed thug who was attempting to break into his crib and murder him and his family with a full suite of special rights and privileges, and neither would President Bush. A gansta wouldn't unilaterally lay down his weapons in the hope that his action would convince his enemies to reciprocate, and neither would President Bush. If one of a gansta's peeps told him that his rival, who had already taken pot shots at him, was hoarding weapons and ammo for another go, he wouldn't wait for that rival to make his move before he launched a little "preemptive strike" of his own, and neither would President Bush.
No doubt, no doubt.
He also probably meant that gangstas do what they think they have to do and don't pay attention to the whining of cowardly critics.