If the same objective, the same training goal, is just muscle tissue growth—and we're not talking about maximal strength or any of those type of parameters, we're just talking about growing muscle—if there's an athlete A, and they do 6 sets of 10 with 2 minutes rest, and there's athlete B that does 6 sets of 10 with 3 minutes rest, athlete A will likely see the highest muscle gains, muscle hypertrophy gains.