Here is Fitdays totals for 1 cup soybeans cooked, plain... As you can see they have 17 carbs per 1 cup... BUT, the effective carb count is only 7.
Calories: 298
Fat: 15 - 50%
Sat: 2 - 7%
Poly: 9 - 28%
Mono: 3 - 11%
Carbs: 17 - 10%
Fiber: 10 - 0%
Protein: 29 - 41%
Ecc: 7

And Nori-Nu extra-firm tofu per 1 slice, about 3 oz.
Calories: 46
Fat: 2 - 31%
Sat: 0 - 5%
Poly: 1 - 18%
Mono: 0 - 6%
Carbs: 2 - 14%
Fiber: 0
Protein: 6 - 55%
Ecc: 2

Enjoy