Well, those are completely not the same things.
Peter failed for a time - but he still believed on Jesus Christ as Messiah, and put his faith and trust solely in Him. Peter learned, and then lived, that you didn’t need to keep the law for salvation.
The SDAs believe you need to keep the law to help you be saved. That’s a *rejection* of Jesus Christ, as the Bible defines it in Galatians, etc.
These are not the same thing at all.
Despite his religious denomination, Ben Carson is still a candidate for president. He has an outstanding resume as one of the world’s greatest doctors, and the real question is whether expertise in a field other than politics qualifies a person to be a president.
Personally, I think I’d rather have any randomly chosen successful farmer in America be president over Barack Obama...or Hillary Clinton.