Hmm, yes interesting, numbers..formulas...critical analysis. oh no, no no no ARRGH **head kersplode**
Speaking as a shaman (sometimes), the "math" should be taken with a grain of salt. If raw dps is the only thing you want from a totem the math is plain and hard to refute (given its valid and all). WF would seems to be the totem of choice based on no other knowlege or understanding.
However, what the math doesnt tell you is that the actual (hands on) mechanics are much more complicated than that. When you consider all the spell buffs, auras, potions, foods, etcetc the math gets way too overwhelming. It comes down to knowing what is going on in your group and using the totem that best suits the team. I think shamans are widely misunderstood, poorly played, and discounted as a good party class (another thread entirely). When, in fact, its my opinion that they are the high on the list of most group friendly class.
When playing as a shaman, I dont consider just dps for my totem usage. Instead, I place totems that would greater benefit the group. For example: GoA/WF will certainly help dps, but if the tank is a druid already struggling keeping aggro, WF is not the right totem to use.
Some random notes from experience: The way overlooked Flametongue totem can be increased by talents and is also increased by +damage gear and "trinket pushing".
Weapon speed is WAY important for burst damage, and therefore, usefull in a pvp situtation. <--see?