Tallywell.

Soy milk (unsweetened) vs Milk (2%)

Soy milk (unsweetened) counts toward 30 plants a week; Milk (2%) doesn't.

Soy milk (unsweetened)Milk (2%)
Protein · per 100 g3.3 g3.3 g
Fiber · per 100 g0.5 g0.0 g
Energy · per 100 g43 kcal50 kcal
Protein · per 100 kcal7.7 g6.6 g
To hit 30 g protein909 g · 391 kcal909 g · 455 kcal

Bold marks the better side of each row. "Per 100 kcal" answers the density question — which food delivers more protein for the energy it costs. Portion row is computed live from the same USDA base values shown on each food page.