RAID 10 vs RAID 50, safe difference

We are creating a new volume like Storage Production, until a QNAP message assaulted the doubt. Do you know which of the 2 Raids have lower data loss risk? in my understanding, RAID 10 is safer, well use half of disk in mirroring, meanwhile the minimum fault tolerance of RAID 50 is 1, and the max, it depends on the amount of subraid, but no case I would have as much fault tolerance as a Raid 10. Im right? If so, why the NAS considers that Raid 50 is safer than Raid 10?