Similar, but I believe the strength addition is also because it changes the directions of the Z-axis layers.

Most filament is rather strong in tension. If you imagine printing a regular cube, without rotation, it’s going to be strongest stretching or compressing the sides of the cube.

But if you pulled the cube apart from its top and bottom, the only adhesive strength is the fused connection between layer heights. Which is super weak.

By printing at an angle, the layer heights may be in a direction that doesn’t receive tensile load, making it functionally stronger.