Rommel was not the worst, agreed, but clearly not the best nor all that he's commonly credited as. My Kasserine comment refers to the poor follow up Thala and Sbiba rather than the potential breakthrough to the ammo dumps at Tebessaor a drive to Bone. Instead, after the badly disrupted US/UK forces stopped him, he turned to attack Montgomery at Medenine in a perfect disaster. He was recalled after this. Montgomery trying to lecture Patton (at the time of the Kasserine debacle he was not yet in a foward command--I think he was commanding Oran?) has to have been one of Montgomery's silliest ideas. Just think of the personalities involved. I'm not really a huge fan of either of them.