Note: 2-D political diagrams mean little, especially in reference to a third-way ideology such as fascism.
They aren't everything, but cross referencing 10 different axis combinations definitely has value.
They generally oversimplify reality by ignoring motivations for supporting policy positions. I remember one question on the Political Matrix test that asked about views on immigrations. This one stuck out to me in particular because it was unique in affecting both the economic & social axes. Opposing immigration made one more right-wing in both and supporting it made one more left-wing in both.
Problem is, motivations can be far more complicated. You might oppose immigration because you're a protectionist, which is economically leftist (though it was a big business position in the 1800s). On the other hand, you might support legal immigration as a pretext to a push for unrestricted free trade, which would probably be seen as a right-wing point of view.
Point being, the traditional 2-D political tests make assumptions about why people support the positions that they do. These assumptions largely make sense for typical American voters, but fail miserably when applied to ideologies outside of the mainstream, such as fascism.