It isn't quite that simple. Some of the ratings are intertwined. A guy with 90 power and low contact/low vision will hit less homers than a guy with 90 power and high contact/high vision. There are some quirks to be aware of and some of the ratings behave more linearly than others in producing stats.
The ratings spreadsheet has been made private so that there's less likelihood of people "scooping" OSFM and putting a fake product out under that name. I don't curate this spreadsheet, but I'd imagine that it might be made available later on and after OSFM comes out.