As far as I can tell from the illustrations - they have the same angles.
For me, I think the Tri-Recs ruler(s) would be a lot easier to use.
Because - I would only need to concentrate on only one shape at a time.
When one makes the triangle in a square unit (Doreen Speckmann called it her "Peaky and Spike Unit") - one has to remember that one of the side triangles is the reverse of the other side triangle.