It was a question question of life life and death.
Patricia Costello Argus that some of the red barons victories were due to his strong leaderships not just his flying skills
The part where Zaroff tried to include Rainsford in his sick hunting game would be the best portray Zaroff as Rainsford's foil i think.
Beside that, they both actually are very similar with one another
Rosetta Stone is used to teach languages