what are you feeding the outdoor plant? did you give it pgr's? because that would explain the difference in bud structure from what i have read. if not then i have no idea
Looks great. Pretty crazy how different plants grow outdoors versus indoors. I grew my last four plants because I loved the result of one of the same seeds grown outdoors - oops totally different plants indoors, not one of the four was anywhere close to the outdoor plant. Even crazier when it's a straight up clone like yours.