Torque.... I agree that it is a feel, and to elaborate on the feeling about the torque, this is what I can say.
You can have a high torque stiff flex shaft and you feel like the club is a regular flex shaft. It feels like it is bending more, but in actuality, it is twisting during your swing. As for the low torque shaft with same stiffness feels like the shaft feels stiffer. Therefore, if your swing speed is fast like Tiger, I wouldn't use high torque shaft since the shot will hook.
I was trying to describe the feeling that I had when I was using the high torque shaft compared with low torque shaft. I hope this clears up things a little bid.