Reliability of charging stations availability during charging planning?

I have seen various videos on YouTube from vehicles of the MEB-Platform or from Tesla on the topic of charging station availability and whether the charging stations which are taken into account in the charging planning were then really free. At Tesla the whole thing is problemless but with the MEB vehicles the respective charging station was often marked as free but it was occupied after all. Of course it can be chance that just a few minutes before someone plugged in and the system has not yet transmitted but Would that interest me at Mercedes? I haven’t found a video yet. The (current) Navi is often highly praised but is it also TOP in this area? What are your experiences? Are there any differences between the MBUX system (EQE, EQS etc.) and the MBUX system?