While I may California Roll occasionally, at a yield sign I may not slow at all, or only slow enough to safely make a turn. So there's definitely a difference b

While I may California Roll occasionally, at a yield sign I may not slow at all, or only slow enough to safely make a turn. So there's definitely a difference between the two, even if you treat the stop sign as "just a guideline". Stop means go slow enough that you can make a complete stop if you see police in the intersection. "Oops, missed the limit line by a couple feet, but I was totally always gonna stop."