Does the wolfgang puck slow cooker operate at a higher temperature than other slow cookers? I made a root vegetable recipe using LOW slow cook and it was done is 2 hours vs 4-5 hours recomended by the recipe.

The wolfgang puck slow cooker uses duel heating elements one on the bottom and also around the sides. The temperature is controlled by the user. I would double check the setting you had this on, but I believe that the better quality cooker simply does a better job than most of the cheaper store models and therfore you get better results. this cooker also automatically goes to low mode when the food is done, did yours switch to the low mode, or did it stay on high? To answer your question, the cooker does not intentionally cook at higher temps, but the compitition just doesn't match up to the quality in this unit. I have read many testomonies from many happy customers about the quality and ease of operation and the cooking abilities of this machine. It just may be that you wil have to get accustom to the way this cooker works.
I hope this helped and if you have any more questions about this I would be happy to try and answer them for you.