Its hard to pick on any particular batsman in the SA lineup since they were all so poor this tournament, but Gibbs is the guy who definitely shouldn't of been there. He has looked out of it for quite some time and whats worse is they still played him after his dismal display in the IPL. His fielding is still as sharp as ever but you don't pick someone just for that.
I can't bring myself to care about Bosman even if he can be effective in T20. The fact that he is such a limited batsman irks me.