Hey guys, just because you find one image of an athlete appearing to land with a certain foot strike doesn't mean that they ALWAYS do so, nor does it necessarily even mean that they are loading their weight into their foot that way. These runners are moving forward at a pretty good rate, and they likely bring their center of mass much closer to their foot before they actually load their weight on it - this is the point at which force is applied, and it could be applied through a range of portions of the foot regardless of which part touches the ground first or which part simply looks like it is going to touch the ground first in some random picture (ankles rotate...). Video analysis would be much better if you really want to get into this, but even that can be sketchy unless you have a higher than standard frame-rate video.
Anyway, elite athletes demonstrate a wide range of running forms and we will never know if certain athletes are elite because their running form is ideal (for themselves or in some general sense) or because their physiology is otherwise ideal and makes up for their poor running form. You can't change your running form without other variables changing because doing so takes time, so there will never be a way to know for sure.
I think you can have a much better basis in physics if you want to argue about overstriding rather than footstrike so maybe there's a discussion there, but the pure footstrike argument is just religious and pointless.