Might as well change the title or start a new thread, this is a moot point now.
Big of you to admit you were wrong
Del Potro is easily everything vulture is not.
Unfortunately the only thing Vulture has over him is that one thing delPo needs the most: fitness and especially resistance to injuries. Those are completely wasted on such a harmless player as Ferrer; imagine del Potro if he could stay consistently healthy, now that'd definitely shake things up big time at the top of the game.