The phrase "added advantage" means having an extra benefit or advantage in addition to what is already expected. It implies having something extra that can give you an edge over others. Full definition
The background experience of financial / collections are added advantages for faster growth and promotions. (topjobapplications.com)
It is a good idea to select best and top firms if you want to get added advantages in this industry. (binarysoftware.org)
We were careful not to give added advantages to those heavily equipped vehicles, because we wanted the test to be as «real - world» representative as possible. (kbb.com)