I agree no way Tom could 'cut it'. I think Chef keeps them flustered mostly to see what they're made of. The winner gets to run their own restaurant, not just any restaurant, but a million dollar restaurant in a billion dollar hotel in Vegas (I believe in Vegas).
I get put off by Garrett and his male chauvenist comments.. of course, that may have no bearing on whether or not he's a good chef and could do the job but he really irritates me. I thought it was funny when he now sees it took a woman to get the men's group into shape and actually win!
