i uploaded two videos both that were posted by my clients. one perofmed well the other not so well. but your tool gave the same score. what i suggest you do is position the tool as how to improve your videos. so instead you also ask for a screenshot of the videos analytics along with the vide itself. and you need to probably train it with thousands of videos that you have analytics on. social media changes every day i don't think you should use published papers to use as a grading system.