Originally Posted by Harry D
It shows that these men had a greater degree of self-control, which is how they were able to lead such a double-life. The Ripper killed over a much shorter period of time, and even struck twice in one night because his bloodlust wasn't satiated.
Eh - once again: the Ripper of whom you talk is an invention concocted out of guesswork. We do not know how many victims he had, we do not know if the ripping was a sideline, we do not know if the double event was him in both cases, and even if it was, we do not know that he had not decided beforehand to kill twice that night - the suggestion has been put forward by Tom Wescott.
We can therefore not rationally decide that the Ripper was more or less in control than any other killer.