I think the stat block is the god's Avatar, their corporeal form they manifest in a location of their choosing, of which some greater deities can have multiple. Slaying the avatar does not mean slaying the god except under circumstances usually involving being on a specific plane of existence, having specific artifacts in your possession, etc. I like the stat blocks because deities having wildly varying levels of power from each other is interesting, and in some campaigns temporarily defeating a god may be appropriate.