Yes, it is confusing as many over the counter products seem to advertise spray wax and sealants interchangeably.
Here is a helpful video on durability of spray on sealant/wax products. The Meguiar's Quick Wax performed admirably 10 days and several thunderstorms post application. It was on the far right. The Optimum Car Wax did the best and jt was applied far left. Can't remember what the other two products tested were but they were in the middle between the Megs and Optimum.
https://m.youtube.com/watch?v=5Mkgp07UvDg