Are 1D luminosity plots correct?

In the context of the PDF4LHC benchmarking exercise, I've realised that there is something that I don't understand with the luminosity plots generated with validphys. If I plot the 1D gg luminosity for sqrts=14 TeV I obtain different results w.r.t. those obtained with APFELweb. I attach the plots obtained with APFELweb and with validphys. lumi_APFEL.pdf lumi_validphys.pdf I think that the APFELweb result is correct because if I write a small python script by scratch I indeed obtain that the ordering of the ratios around mH is NNPDF31>MSHT20~CT18NNLO (as in the APFELweb plot) - while it's the other way around in the validphys plot. May this be a bug? Note that this is important, because all the luminosity plots in the NNPDF4.0 paper may be affected.