Czisny wouldn't make a good pairs skater. She doesn't do salchow at all, and her 3T is one of her most inconsistent jumps. There would be even more pressure on her to complete jumps in pairs, so her subpar nerves would sabotage her as much in pairs as in singles.
OTOH, Rachael has all of the jumps, and she's a consistent performer, but there's no reason for her to give up a successful singles career for pairs.
OTOH, Rachael has all of the jumps, and she's a consistent performer, but there's no reason for her to give up a successful singles career for pairs.