"They both have a great kick, the only difference is one kicks with his right foot and other with his left, they're both massive players, we'll have to be really careful of Carter and they of Hernandez," he told Reuters.
The Pumas, who host the match in the provincial capital La Plata 60km from Buenos Aires city, will be looking to beat the All Blacks for the first time after 15 defeats and a draw in 1985.
Argentina have played very well for an hour against New Zealand and Australia in their two previous matches before being pinned back and beaten.
Agulla said playing at home would be huge plus, like having an extra player, and Argentina had been working on maintaining their game and concentration for the full 80 minutes.
"We'll have to play 110 percent, not make silly mistakes, keep the ball and not defend the whole game," he said, defining the factors needed to have any chance of beating the All Blacks.
"(At home) it will be like playing with a 16th player... We've been playing maybe 70 minutes and we have to improve that."
Teams:
Argentina
15-Lucas Gonzalez Amorosino, 14-Gonzalo Camacho, 13-Marcelo Bosch, 12-Santiago Fernandez, 11-Horacio Agulla, 10-Juan Martin Hernandez, 9-Martin Landajo; 8-Juan Martin Fernandez Lobbe (captain), 7-Juan Manuel Leguizamon, 6-Julio Farias Cabello, 5-Patricio Albacete, 4-Manuel Carizza, 3-Juan Figallo, 2-Eusebio Guinazu, 1-Rodrigo Roncero
Replacements: 16-Agustin Creevy, 17-Marcos Ayerza, 18-Tomas Vallejos, 19-Tomas Leonardi, 20-Nicolas Vergallo, 21-Martin Rodriguez, 22-Juan Imhoff
New Zealand
15-Israel Dagg, 14-Cory Jane, 13-Conrad Smith, 12-Ma'a Nonu, 11-Julian Savea, 10-Dan Carter, 9-Aaron Smith; 8-Kieran Read, 7-Richie McCaw (captain), 6-Liam Messam, 5-Sam Whitelock, 4-Luke Romano, 3-Owen Franks, 2-Andrew Hore, 1-Tony Woodcock
Replacements: 16-Keven Mealamu, 17-Charlie Faumuina, 18-Brodie Retallick, 19-Sam Cane, 20-Piri Weepu, 21-Aaron Cruden, 22-Ben Smith
(Reporting by Rex Gowar, editing by Justin Palmer)