Traits Have an Upper Limit of 5
Traits have a value which ranges between 0 - 5.
each Trait has a rating from one to five ... You should consider the normal human range to be from one to three, with two being average. However exceptional people, Garou especially, can have traits of four (exceptional) or five (supurb) ... (Werewolf: The Apocolypse, pg.82)
This is to say that in general you cannot have a trait above 5. I looked through a few of the books I have and didn't see any examples that raise a trait above 5 (though I don't have the Fenris tribebook). However, if one did say that it would be an exception to the general rule.
You mentioned two different kinds of phrases for how totems grant benefits. I'll use a different example from the books I have to illustrate the differences.
Some benefits add a dot or two. For example, the Raven totem (Red Talon tribebook, pg.50) says:
... Raven's children ... each gain one point to their Wits Attribute.
So if you follow the Raven totem you gain 1 point in your Wits. You should also observe the maximum from the corebook. So if you already have 5 Wits that bonus won't do you any good.
On the other hand, some totems give you a certain value in a trait. For example, the Sphinx totem (Werewolf Player's Guide, pg.130) says:
...Sphinx grants her children Enigmas 3.
As written, this sets your Enigmas trait to 3. This is great if it was less than 3 previously, and disadvantageous if it was higher.
Although I don't know of a written rule to this effect, at our table we allow characters to use their own traits if they are higher than the totem bonus. We connect this to the fiction: in foregoing your totem's benefit, you are relying on your own knowledge/skill/ability. This system has worked for us without any downside.
It might be easier to use reliable sources. Two of the sources you linked to appear to be about World of Darkness MUDs, rather than the tabletop game. I'm not knowledgeable in these games, but in several cases I noted that the totems grant different benefits than they do in my Werewolf books.