 Exceeding the difficulty by a larger amount indicates complete success and exceeding it by a very great amount indicates success with an additional beneficial outcome.For example, if attempting to disguise oneself to get past some guards, the lowest level of success would get the character past the guards, but they would be suspicious and perhaps mention it to their superior later.A simple success would simply get the character past the guards, but the highest level of success might, for example, indicate that the guard radios ahead to let other guards know that they're legitimate visitors.