There is a great deal of difference between the two images, aside from building placement. The autogen and background ground are different, as well. Even the runway and taxiway surfaces are different. It is more accurate to say the only things the two images share is the approximate location of pavement. Except for one scenario I can think of, these discrepancies far surpass the discrepancy between FSX:SE and P3Dv3, to the point that a shared understanding of the situation is woefully lacking. This is to say, the evidence that one works in P3D and not in FSX, is as pertinent as to say one works in the blue computer and not the red, when you compare the difference between simulators, to the difference between those two scenes. The one unique scenario would be, that you compiled for P3Dv3. This would explain, to me, the default status of pavement polys and complete lack of everything else.
FYI, this is not a simple consequence of building model file locations or texture paths, there are fundamental differences between the scenes that, to me, imply, perhaps; mismatched sequential edits, unknown scenery excludes, non default libraries and these are just a very few of the myriad situations that could lead to this sort of condition, the conclusion being there isn't enough information to even hazard a guess. It would be better if you shared your files, or went into more detail about procedure.