ur high resulotion and blur logic is way off
infact if u put it other way, high resulotion will make u see slightest of blurs
and motion blur, the case u ppl discussin here is related to shutter speed.
too get this much clear differance among lines, u need very high shutter, i dont have the time to calculate
but to use those shutter speeds, u need large aperture, which is not the case as depth of feild is very large, so thrfore u need lots of light, natural light. which is average in the pic but cant correctly guess, its really hard to get this kinda pic with all those limitatoins.
so with those things in view, i will vote for photoshop.