Question: I'd like to know who performed the stunt near the end of the movie where Gabe jumps from the cliff as he runs from Qualin in the helicopter, and then catches the ladder on the way down. I thought that looked incredible.
Question: How the did the cases carrying the money survive intact after being dropped from so high?
Answer: For one, they fell into snow which would have softened the blow. Also, as common in aviation or even just cases that are meant to contain valuables like money, they are designed to withstand impacts or attempts to break them open.
Quantom X
Wouldn't the bad guys have to spend what could be weeks trying to find the money if the cases were to break open?
Probably yes.
Quantom X
Answer: There are two stunt doubles for Mr Stallone on imdb.com, their names are Mark De Alessandro and Jeff O' Haco. The site doesn't specify who did what.
The-Immortal