[googlryas]

But vesna was stuck in the fuselage, not just free falling. So she may have had a higher speed, but she have experienced fewer Gs as the fuselage crushed upon landing, giving her a greater distance to decelerate.

But really, it's silly to compare these. Neither relied on any personal qualities to achieve the outcome, it is basically just blind luck in both cases. Without Cliff's lack of spleen or Vesnas weirdly low blood pressure, both probably would have died. Or if they just landed oriented slightly differently.