The problem with this analogy is that the resistance isn't small compared to the moving mass. The resistance is very large, after all it was built to support this mass. Therefore the small resistance theory falls apart. I wish I had the study to show, but as I have stated, it was analyzed using only 1/10th the floors as resistance and it was still to much for a free fall speed.
And remember more mass doesn't mean it falls faster, it still accelerates at 1g without any resistance no matter the mass. The only thing more mass gives is more momentum, it still has to accelerate the same.
And also remember that each impact is going to create a resistance, meaning each floor. Unless the first impact was enough to shatter the entire structure (in which case the tower as a whole would begin to fall together not floor by floor) then you have to account for the resistance through out.
Want DP delivered to your inbox daily? Subscribe here: