Implemented correctly, I agree the difference in security margin may not be too important. Otherwise, Serpent is more resistant to timing attacks. Weaknesses in implementation are as important as weaknesses in design.
Regardless, the comparison wasn't intended to argue for a meaningful difference in security margin, but to show that that the winner of the competition, well, wins (in adoption).
Regardless, the comparison wasn't intended to argue for a meaningful difference in security margin, but to show that that the winner of the competition, well, wins (in adoption).