That's your opinion, I already posted mine. I ran Super Stock springs for awhile on my Challenger when it was a daily driver. Even with 1.12" torsion bars up front the Super Stocks were too stiff out back for the car to be balanced. 1.12" bars are pretty stiff, but the SS springs still created a harsher ride compared to those bars up front. They also raised the back of the car far too high for any kind of serious handling. I switched to XHD's, problem solved.
Plus, they do give the car an uneven ride height side to side, and don't have the same spring rate side to side. That compromises handling, the car does not react the same way turning left vs turning right. No, using SS springs isn't horrible, but there's no real reason to use them on a street car that never, or even occasionally sees the track. They're for street/strip cars that see equal usage on both in my opinion, and they absolutely have their place on the strip.