No I haven't drilled on any regular F150's I was helping out a fellow FRF member to install a light here at my home since I have the tools. The same type of drill bit that would not drill through the roof drilled through the frame and other parts of the Raptor like butter. Just trying to make the point that yes the roof definitely has some kind of super strong reinforced hardened steel in it.
That's all I was saying. Where you drilled may have had something there. Doesn't suddenly make it special to the Raptor. We have to know the regular F150 is different before we can make these assumptions.