As far as I know, the iCP Self Sponsored course with CTC involves a different selection day, which includes the aptitude testing, interview and group exercises all in one go. They then give you feedback at the end, so that you can make your decision as to whether or not you want to fork out for the course. As the iCP is handled by a different team of people to the Wings selection, you might have to go through the selection again in the form of the iCP day, in which event you will then get the feedback you want. You'd have to do this if you applied to any other self-sponsored course, so chin-up - it could be worse