Well I'm still not sure that they are exactly the same, but would also assume they are.
I wanted to know because I was going to enquire about a spoiler from a GTD being broken on ebay. According to TPS, 3 and 5 door spoilers are identical, so this one from a 3 door car would fit. However, when I weighed up the cost of the used one, the time and diesel going to get it, and the potential that it may be damaged from removing it, a new one doesn't seem so expensive after all.