The court determined that in this case (on a marked pedestrian crossing where pedestrians have right of way) the bike driver broke the rules of traffic as he should have stopped before the crossing; and it did not determine that the pedestrians broke the rules of traffic.

So if the person lying on the road survived and the person driving the motorbike died, then it's plausible that the person lying on the road would be charged for manslaughter in order to determine the situation (I believe that in case of fatal traffic incidents involving more than one party, in Russia almost always a criminal investigation is opened) but would be found not guilty.

At least in US there's a pedestrian's duty of care that's involved in determinations like this. A pedestrian could be found guilty of negligence and the burden shifts to them partially or in full depending on the state and the exact circumstances. Examples could include intentionally running into traffic, attempting to disrupt traffic, or even things like ignoring walk signals. However, in the last case it's unlikely that would relieve a driver of their duty of care as they'd still be in a crosswalk, it would just usually reduce the portion of their liability and move some onto the pedestrian... in some places (like NY). That type of scenario probably would have played out in this case for the states that have compensatory systems, but I'm really not 100% sure once it involves death.

I think even Russia has this situation covered if you can prove on a camera that someone intentionally jumped out in front of you. It's just way less open to interpretation by the court.