TSBD Doorway man - Oswald or Lovelady?

[LR Trotter]

I am certainly no photography expert, but I do wonder about how accurate the doorway portion of the much discussed Altgens picture is. A somewhat small area when looking at something that appears to be close to the original size, and when blown up the possibilty of blending, at least to me, exists to create a false image. The Doorway Man's shirt also seems to blend somewhat to the jacket of the person on his left, but I also wonder about the one dimensional aspect as well as the angle factor of the doorway in the photograph as taken by Mr Altgens. Just some random thought, and hoping for a knowledgable comment or two.