I've often heard people say that large diameter shafts are more forgiving of slight mishits because the contact point doesn't move as much, but that's not true. Given the same tip shape then the only time it's more forgiving is when you get to the point of a miscue on the smaller diameter tip.
Now, a flatter profiled tip would be more forgiving, regardless of shaft diameter.
Now, a flatter profiled tip would be more forgiving, regardless of shaft diameter.