The photos are similar, but they are different. First, the lighting on the top photo is brighter than the bottom. Also, the shadows are on a different angle from the top as compared to the bottom. Plus, in the far hairpin (left-hander) at the top of the pictures, the shadow appears to be thinner in the top photo than the bottom photo. Next, there are not as many manufacturer banners in the top photo, as opposed to the bottom, so even if it may be a shot from GT4, it is not a direct shot. Finally, I have noticed some of the tree objects are placed in slightly different spots, especially the palm tree at the far hairpin (left-hander). Just as a disclosure, I am not 100% sold on the idea until there is confirmation from PD. But, the files discovered by @Whistle Snap are important, and I am glad someone took the time to dig deep.