Albert Einstein's early school life was fraught with difficulty. He exhibited behavioral problems, poor spelling, and was weak in language expression. Einstein's strengths lay in visual/spatial reasoning and problem solving, you see. You can accomplish good spelling by rote. You can buy spell checkers.
No, I don't think spelling trumps visual/spatial reasoning and problem solving abilities. Could be. Maybe so nowadays. Could be part of the PC stuff that's doing strange things.