Contrary conclusions for LPIPS metirc

[Sunshine352]

python test_network.py
Model [SSIM] initialized
Distances: (0.262, 0.344)
python test_network.py
Loading model from: /data/sunzhaomang/AdvFeat/PerceptualSimilarity/weights/v0.1/alex.pth
Model [net-lin [alex]] initialized
Distances: (0.034, 0.037)
python test_network.py
Loading model from: /data/sunzhaomang/AdvFeat/PerceptualSimilarity/weights/v0.1/alex.pth
Model [net-lin [alex]] initialized
Distances: (0.041, 0.047)
Using SSIM and LPIPS metric, the distance between ex_ref and ex_p0 is smaller than that between ex_ref and ex_p1, that is ex_p0.png is more similiar to ex_ref.png than ex_p1.png, which is contrary to the claim referred in the paper. How to explain this ???