Nieto/Sanz bring a faster, pressure-based right-left pairing that tends to win by controlling tempo early and squeezing service games. Esbri/Ruiz have the higher ceiling in transition and counterpunching, but they must stabilize the right side to let Ruiz dictate with overheads. Slight edge to Nieto/Sanz in Cairo conditions if they keep rallies low and avoid giving Ruiz high balls.