Some of you reading this article were wondering what the key differences were between taco and tortilla soup, after all, they both appear to be quite similar on the surface.u003cbr/u003eu003cbr/u003eWell, the main difference is that tortilla soup is more broth based, and as a result, is quite watery, whereas taco soup is far thicker, and tends to include more ingredients such as vegetables, meat, and several different varieties of beans.