"The data showed significant differences in the oxygen uptake (a way to measure the energy cost of running) in the Vaporfly shoe resulting in a 2.8 percent improved running economy, or the amount of energy it takes a runner to go a certain distance, over the Adidas shoe on average"
But not every runner sees improvement in time. so-called non-responders exist at the elite level but I don't recall seeing any analysis as to why some runners run faster and others don't with these carbon-plate shoes.
Also the significant benefits that comes from improved post-run recovery with modern super shoes, allowing athletes to run significantly more weekly mileage.
Not vibrams, but please have a closeer look at those olypians shoes. These are very lightweight and most important _flat_ shoes, encouraging a natural running pose.
"The data showed significant differences in the oxygen uptake (a way to measure the energy cost of running) in the Vaporfly shoe resulting in a 2.8 percent improved running economy, or the amount of energy it takes a runner to go a certain distance, over the Adidas shoe on average"
https://lifesciences.byu.edu/can-your-shoes-really-make-you-...