Gravity hurts

How fast can you fall and how hard will you hit the concrete.

When you first succumb into falling, you really thought you would fall together.
Unless you are in a vacuum condition, you would definitely fall and hit the concrete at about the same speed and time, same velocity.
But, we are not in this ideal condition, this is reality, one is definitely going to fall faster than the other.
There is wind.
There is mass.
Mass directly contributes to the acceleration.
And then there is gravity, which equals to 9.81m/s.

Thus, one will fall faster than the other.
And now, it is a matter of how hard the concrete is.

Humpty dumpty learned the hard way.