I never said they gave an exact figure, but it's reasonable to assume it's a lot, more than 2 million. Kues, who worked closely with Mattogno
here, says this
in the most exhaustive study on the whereabouts of the "gassed" Jews ever conducted by a revisionist:
"Taken together, this means that the number of Jews who reached the occupied eastern territories almost certainly amounted to somewhere between 1,800,000 and 1,900,000."
View attachment 4990396
You can see he takes the Korherr report at its word. But Kues's study only looks at Jews coming from the west, he doesn't count those already in the east, of which Korherr states an additional 633,000 were evacuated (and these are partial figures). These were the Jews deported from ghettos in Russian territory which were also summarily dissolved. This puts the total figure well above 2 million.
Mattogno, as far as I know, unlike Sanning, has no objections to German documents giving population figures and also speaks of mass resettlement of Jews in the East, even beyond what is mentioned in the Korherr report.
Eg
here he says evidence indicates the "611,000 missing Jews" of Auschwitz were sent into Russia.