Nope, you are never going to get crispy skin in that roaster. The meat is amazingly tender and juicy though. The problem is the moisture staying trapped that makes it so juicy, keeps it from getting crispy.
In an oven you get more dry heat and space for the moisture to get away from the meat. Even so, you still have to remove the lid or foil the last 15-20 minutes in the oven to get truly brown crispy skin.
As to the bird shown in the picture, there is an art to making food look appetizing to consumers. It involves camera angles, food dyes/paint and blow torches. Most of the food isn't cooked or not completely so, then tinkered with to make it beautiful. I remember watching some show on how they make commercials for fast food places...none of the food that was used was actually safe to eat.