Last I checked my math, the Thunder fall totem, with the usual set of talents, and assuming that you crit, comes to about 500+ damage (without the clearcasting +10%) to your largest nuke. The 119 sp to everything would only add abut 200-250 damage to your largest nuke.

Overall damage pouring, yes, the wrathful/relentless totems are decent, but the thunderfall totem makes our most important killing spell more effective.

If you like to kill ppl with a combination of the lightning spells, and a shock, then perhaps the thunderfall totem isn't for you.