You might fall into the phrase of my post you left out. If you can't feel the difference then your roads aren't as f'd up as the ones around here
I can feel the difference between my super6 and my 87' Schwinn circuit with Columbus SL tubes. That bike is plush even on the 23c tires I have one it's box rims. But with flex designed into its curved fork and thin chain stays, its exactly perfect for the f'd up roads here, just not snappy fast like my super6.