I haven't done a side by side yet, as details or photos of the Athearn release has been sketchy until now, but the Athearn version at least has upper rub/lift rails along the side roof line to protect against lifting equipment for intermodal use and the Trainworx does not. This doesn't mean the Twx isn't suitable for TOFC use, as there are plenty of photos of trailers on flats without upper lift rails.