This greatly depends on the objects that are dropped, the height the experiment is performed from and wether or not it is conducted in a vacuum. In a vacuum a feather and a bowling ball will hit at the same time whereas outside of a vacuum the results are completely different.
As an objects mass increases it has a tendency to overcome air resistance and obtain maximum velocity quicker. At least that’s how I understand it. Please correct me if I’m wrong.
RE: Scaling - Why Ants Bounce But Elephants Go Splat