Air resistance on bodies in free fall

Hi,

In a demonstration that was shown in class, two paper cups were dropped from different heights. The first was dropped from two meters and the other was dropped from one meter. Both landed on the ground at the same time.

Why is this so? Would it be reasonable to say that if I dropped one minibus from one thousand meters and the other from five hundred meters, both would hit the ground at the same time?

Thanks,