""Is xbox stitch anything like wii stitch?"
If you look at a grosgrain loop attached to a tarp, the ends will be sewn on with stitches in a rectangular pattern then stitched corner to corner, diagonal like an X in a box. It's a stronger attachment than just a few zigzags of stitches."
The strength of the sewing depends on many more variables
than the stitch pattern. If the force is straight along the
direction of the tie out, then a box X stitch is not the
strongest, stitches parallel to the direction of pull are.
But the fabric strength, the thread stretch, stitch
length etc. also will determine the best stitch pattern.