There's a bit more then that @Jackal the 2nd
Core theme: Normal humans that got killed and came back from the dead to get their revenge on those who wronged them (her friends for Sarah and the gods for Kratos)
Other connections: Both have gotten power after a traumatic in their lives (Sarah dying and Kratos and making a deal with Ares)
Both became God's but gave up the powers (Unwillingly in Kratos' case)
Both of their quests of revenge ended with only one living (Tom and Aphrodite)
Both are somewhat sadistic killers
Both didn't like what a red god did to them and made do (Atem and Ares)
Both got sent to a new place after relisting what they did was wrong (Sarah got sent to heaven and Kratos got sent to North mythology) where they take a son as there own (Kyle and Atreus)
