Every year these companies are developing new technology that makes a shoe lighter and "more responsive," and consumers fall for the advertising gimmicks. I had worked in the shoe business from the late 90's to 2010, and shoes were progressively getting worse with all of these new "gimmicks."
The Pegasus used to be one of the best shoes ever, and now it is junk.
The Nimbus is quickly following in the Peg's footsteps.
The only company that is making better quality shoes in my opinion is New Balance.
Just my two cents