Why is taking only heelstrikers a problem? The vast majority of all runners strikes with the heel and I imagine that it is really hard to find enough people who are real mid- or forefoot strikers for a study. Moreover, especially a heel striker should profit from maximum cushioned shoes compared to mid- or forefood runners. If that effect cannot be observed with heelstrikers, it will not be observed with forefoot runners either.
Concerning the different drops of the shoes: I do not get why this should make a difference regarding the impact force.
Finally, "citing" anecdotal evidence like "so many runners report that maximum cushioned shoes reduce the risk of getting injured" is not really a strong argument against a peer-reviewed paper published in a scientific journal such as nature.
Concerning the different drops of the shoes: I do not get why this should make a difference regarding the impact force.
Finally, "citing" anecdotal evidence like "so many runners report that maximum cushioned shoes reduce the risk of getting injured" is not really a strong argument against a peer-reviewed paper published in a scientific journal such as nature.