In this paper we show that the authors Yarman et al. (2015) had a misunderstanding of our theoretical analysis in Corda (2015). In fact, in that paper we have shown that electromagnetic radiation launched by the central source of the apparatus is redshifted of a quantity class="mathmlsrc">class="mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0003491616000555&_mathId=si2.gif&_user=111111111&_pii=S0003491616000555&_rdoc=1&_issn=00034916&md5=6266db0a97d4dec3bbe9e67e7f38e26d">class="imgLazyJSB inlineImage" height="25" width="37" alt="View the MathML source" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0003491616000555-si2.gif">class="mathContainer hidden">class="mathCode"> when arriving to the detector of class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0003491616000555&_mathId=si1.gif&_user=111111111&_pii=S0003491616000555&_rdoc=1&_issn=00034916&md5=d9e6410ba30185afd73d7107dfa236ba" title="Click to view the MathML source">γclass="mathContainer hidden">class="mathCode">-quanta. This holds independently by the issue that the original photons are detected by the resonant absorber which, in turns, triggers the class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0003491616000555&_mathId=si1.gif&_user=111111111&_pii=S0003491616000555&_rdoc=1&_issn=00034916&md5=d9e6410ba30185afd73d7107dfa236ba" title="Click to view the MathML source">γclass="mathContainer hidden">class="mathCode">-quanta which arrive to the final detector. In other words, the result in Corda (2015) was a purely theoretical result that is completely independent of the way the experiment is concretely realized. Now, we show that, with some clarification, the results of Corda (2015) hold also when one considers the various steps of the concrete detection. In that case, the resonant absorber detects the energy shift and the separated detector of class="mathmlsrc">class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0003491616000555&_mathId=si1.gif&_user=111111111&_pii=S0003491616000555&_rdoc=1&_issn=00034916&md5=d9e6410ba30185afd73d7107dfa236ba" title="Click to view the MathML source">γclass="mathContainer hidden">class="mathCode">-quanta merely measures the resulting intensity.
In addition, we also show that the YARK gravitational theory is in macroscopic contrast with geodesic motion and, in turn, with the weak equivalence principle (WEP). This is in contrast with another claim of the authors of Yarman et al. (2015), i.e. that the YARK gravitational theory arises from the WEP. Therefore, the YARK gravitational theory must be ultimately rejected. We also correct the confusion of the authors of Yarman et al. (2015) concerning their claims about the possibility to localize the gravitational energy and, in turn, to define a stress–energy tensor for the gravitational field. In fact, we show that these claims are still in macroscopic contrast with the WEP.