Seems cool to compare. Both OC's have around the same height. My Scratch 3.0 OC's head is littler, with its belly and legs looking taller and the pants and shoes looking darker.
Credit to @Scratchingsoft682 for making my Human OC that I would use in Scratch 2.0 if it is still present. Also, I had problems with uploading the 2.0 OC, so I took a screenshot of it instead.