So the Totem is kinda awkward, First its benefit is to use larger weapons but the books says nothing about the benefits of larger weapons. Second it says you can use Larger weapons when NOT Raging. But only give you a benefit while raging, Unless you always have a the damage boost even when not raging. IE you get double the rage damage bonus when not raging as well. then you get the double when raging and also get the rage bonus.
So point is there is 0 benefit to using a larger weapon while not raging only penalties. They are pretty crappy at that as well.
Edit- So at level 1 when not raging you would get +4 damage and -1 Ac and -1 Attack
And when raging you get +6 damage and - 2 ac and -1 Attack.
Or when not Raging you have -1 ac and -1 attack and gain no bonus.
then when raging you have +4 damage -2 ac and -1 attack.