A brief combat log snippet tells us what again? That the RNG owned you? This has about nothing to do with Enhance having lower health than is required to do certain fights, specifically hard modes, in which you can die through no fault of your own on a consistent basis.
While I don't enjoy dying, hopefully this data helps support the issue.
1:46'28.546 Gojant gains 204 health from Healing Stream Totem IX #19 Healing Stream Totem. (204 Overheal) #343188