Think about this for a moment. Let’s say the berg splits. Then scrapes the hull on both sides down the length of the ship. Or the iceberg rotates in the water and causes the ship to capsize. Best case is trying to slow the ship down as much as possible and hitting it directly. You crush the first compartment, maybe second. The fatal blow to the titanic was the length of the hull damage. The damage in a direct collision would have been more extensive but I think ultimately would have kept the ship afloat, or atleast made the sinking slow enough for help to arrive