A quick overview of the available literature supports the stated claims, if we assume that the popular image of the Inquisition involves routine torture and execution.
In an article on "Inquisition Proceedings against Muslims in 16th Century Latin America" published in Islamic Studies, Rukhasana Qamber writes that:
In a comprehensive study of the Mexican Inquisition [in the 16th century], Richard Greenleaf found that 95 out of 100 Mexicans during the colonial period had no contact with the Inquisition. Of the five who did, one sixth were not tried by the Holy Office and perhaps two out of 100 were condemned, 0.5 out of 100 underwent judicial torture, and less than 0.1 out of 100 were executed.
On the subject of "The Repression of Sexual Behavior by the Aragonese Inquisition between 1560 and 1700" in the Journal of the History of Sexuality Andre Fernandez writes:
It is important to note that for 2.5 percent of solicitants, that is, six out of the
245 reported cases the council voted for torture.
In "Inquisition and the Prosecution of Heresy: Misconceptions and Abuses" published in Church History, Henry Ansgar Kelly writes:
I dismiss without further ado the modern notion that defendants in any canonical process, inquisitorial or not, were presumed guilty until proven innocent. No one could be legally convicted of a crime without adequate proof [...] Huguccio in the twelfth century formulated the rule that ecclesiastical judges should employ only moderate forms of torture, which John Andrew in the fourteenth century interpreted to mean rods or switches or leather whips rather than the rack or claws and cords. Eventually, restrictions were placed on the use of torture by papally appointed heresy inquisitors because of reported abuses.
Perhaps the most fitting one-sentence answer to your question comes from an article by Ruth Behar, an anthropologist form University of Michigan, who begins an article on the subject by writing:
In Mexico, as in Spain, the Inquisition was far less severe than legend would have it, showing little concern to eradicate magic and witchcraft among common people or to convict and burn them for their heterodox beliefs.
The results of the report you quote seem to fit the general consensus of contemporary scholars.