Not sure then, I just created a game using the sheet and made them level 2 with a 14 dex and proficient in Acrobatics. It rolled with a +4 and the formula looks extremely different from what you are showing. Sorry, I just don't have any experience with that sheet. In fact I don't think I've ever seen anyone post about it before. If I could ask is there a particular reason you or your GM picked that sheet?