How can this happen that two different titles are under the same EAN?
Well, in theory it is perfectly possible that the distributor recycled the EAN/UPC, it's a very unfortunate habit.
In this case I'd rather assume that someone (possibly but not necessarily from Switzerland) wanted Jagdfieber 2 in the database so bad that he/she re-used an EAN and simply changed the locality. I mean, look at the profiles, Rescue Dawn is pretty complete and well groomed where Jagdfieber 2 only carries very few information at all.
If you want the Jagdfieber-profile gone change the title to "Screeners please delete" or something like it and explain your reason in the contribution notes.
If you want to submit a Swiss-Profile for Rescue Dawn under this EAN just do it and again explain your reasons for overwriting the other profile in addition to documenting the sources of your data.