magplug
With a view now of both engines it can be seen that neither first stage fan shows evidence of radial distortion indicating very low/no rotation at impact. In fact one of the fans looks in such good condition that it may actually have been at rest at impact.
What is meant by
radial distortion?
Yes the two engines look different, but then again where are any pictures showing the same views of the fan blades outer airfoils?
Impact has two meanings. Most associate it with the aircraft which in this case seems to be the tail section before the engines.
However the damage to the fan blades has possible timings
1) in the air preceeding the initial ground impact?
2) at the time that the nose comes down hard?
3) One engine wing low takes the brunt of the impact?
4) an engine torn loose from the wing rolling along the ground?
Unless you are willing to connect the damage condition of the fan blades to one of the above then a conclusion is not possible.
Anyway, what does the turbine look like since it may have taken the brunt of the impact?