Winners of Studio Contests are selected by clients. The clients select the winning submission based on their preference and how the submissions meet their needs. Copilot / Project Manager have to drag and drop the winner's submission to the corresponding place (1st place, 2nd place, milestone placesetc.) in Cockpit. In this case no reviewers are needed.
Winners of Software Contests are decided by reviewers. Reviewers filled out the score card for each submission. The final score of a submission is the average of scores the reviewers have given to. Sometimes, the contest includes a milestone prize. The milestone placements are decided by the client.