I think it depends on the normal size. For example, Lickitung weighs 65.5 lbs. So the Gmax/Dmax might weigh the same? When you use a Dynamax band, it forms three clouds that encircle a Pokémon. That may have something to do with the stats. Also, that was just an example. Gmax Lickitung doesn’t exist, but I wish it did!