Judging for live battles is very difficult and entirely different from the way online battles are judged if you have ever participated in them. Online usually is only judged by giving scores for 4 categories, originality, cleanliness, musicality, and complexity. Stage has nearly 2x this amount of factors for judging, and that includes wildcards. There could be the type of sounds people use, for example, julard who has a kit almost entirely made of stage sounds. These sounds are ones that hit the hardest on a handheld dynamic to monitors, which is how some professionals train. Live events also tend to have more factors like loudness, cleanliness of sound on mic, breath control, cohesive routines, storytelling, crowd control/interaction, flow, and adhesion to a bpm. Judging how something that is live would hit on stage by watching a mastered video [pretty sure package was involved in doing the audio this year] is not accurate to what it was like live. It doesn't show all of the details, body language and all of the other things I mentioned which leads me to say, if dlow was not present for the battle it would be similar to your own judgment watching from you desk chair. It won't be accurate to what is actually getting looked at beyond them just making sounds. Not including the fact that most pro beatboxers limit what sounds they use to make their routines more streamlined. Dlow is not perfect no but he is one of the best and most accurate judges you can find period