Someone can add hundreds of details but if not well rendered can be as bad as any other mistake. Weathering will be considered following the state of finish that the participant will have indicated on the appropriate section of the entry form. Straight out of the factory, brand new, no dirt or chipping, not even used. Subject still very clean or a bit dirty since it has been recently been used and maintained. Bent panels, fenders are also the norm.
Subject is very dirty since no maintenance has been done since several days or more.
This is a judgment on how true the model is to the original subject. See the accuracy paragraph in the judging philosophy section. We usually evaluate accuracy with a grain of salt. From time to time a modeler takes artistic license. This is ok but in general though, a model should reflect the real world as accurately as possible.