The rule of law says that the onus is on the accuser, that would be Roberto & those like him, there is no "neutral" burden of proof.
This is what Roberto is alleging:
The challenge pertains specifically to - 1,394,734 - jews (no more - and no less) that I can prove actually set foot in Belzec, Chelmno, Sobibor or Treblinka II, and that I can prove were killed and buried in the camps to which they were deported. The number of jews that I can prove - beyond a reasonable doubt - (Note: I define the term "beyond a reasonable doubt" here as meaning; the evidence that I will provide will convince any reasonable person that said evidence has established my claims to a degree of certainty that will be beyond dispute, and that any person who does dispute my clams after seeing my evidence - is not a reasonable person.) - AND - with the same expressed and implied standards of proof used by Michael Shermer, Skeptic Magazine and The Skeptics Society to determine what constitutes proof - to have actually set foot in and been killed and buried in the camps mentioned below, is the following:
Belzec - 434,508
Chelmno - 145,301
Sobibor - 101,370
Treblinka II - 713,555
Total = 1,394,734
from skeptical inquiry - by me - and consequently, in an email to me, categorically endorses the above quoted statements made by Muehlenkamp (in red), as having been proven by Muehlenkamp - beyond a reasonable doubt - and that all proofs presented by Muehlenkamp in this thread in defense of his above quoted statements - were free of lies - and met his own, Skeptic Magazine's and The Skeptics Society's expressed and implied standards of proof.
So if those alleged 1,394,734 jews really are buried in 75 "huge mass graves," then that means each grave would contain, on average, the remains of how many jews? The answer:18,596.4533
Yet the largest "huge mass grave" - EVER -
located / proven to exist within the boundaries of the Belzec, Chelmno, Sobior and Treblinka II camps, is this one here (located at Sobibor):