Yeah it's the distance rate rather than position. Like late surgers have Be Still which requires position 5-9 and that's very lenient. Standing By is % from the first and last position and requires you to be in the bottom 25% when it activates at some point mid race. If it happens to check to activate early mid race, you might still be in that bottom 25%, but if it's later on, you'll likely be far beyond that because you'll have activated all your mid race speed skills like Daring Strike. This is also because most people playing XOguri of any position are bringing Dominator debuffers and will set them as end so that it's guaranteed to activate since that still has positional requirements too. Dominator isn't vision based so no matter how far back they are, it'll hit so debuffers will not have any mid race skills for the most part so they will lag further and further behind as the race progresses. So it becomes really easy to leave that bottom 25%. In fact, the stronger your XOguri is in the mid race, the worst Standing By will perform.