Inconsistent barbarian feats

[FlashRebel]

Looking at the barbarian feats, I spotted some inconsistent elements among them:

- Animal Skin: gives expert proficiency in unarmored defense, but doesn't grant any greater proficiency at later levels unlike other class feats that improve weapon and armor proficiencies. Add the restriction to maximum Dexterity to AC and it becomes close to a trap feat.

- Animal Rage: what does the term "statistics" refer to?

- Giant's Lunge: its effects last "until your rage ends", but it shouldn't be usable at all while raging since it has the Concentrate trait and lacks the Rage trait.

Is there anything I am missing or is there an actual problem with the rules as written?

[Fuzzy-Wuzzy]

What source are you looking at? My copy of the PDF shows Giant's Lunge as having both Rage and Concentrate traits.

[Vlorax]

Animal Skin is a good feat it's not intended to give you any greater proficiency than Expert and it's certainly not a trap. It gives Expert Prof at level 6 instead of waiting until 13th level, and at 13th when normal barbs get Expert Animal Skin gives another +1. All Barbarians get Master Prof in unarmored at 19th level.

Giant's Lunge has the Rage trait.

I'm sure somebody else can answer the Animal Rage question.

[FlashRebel]

All I get is from Archives of Nethys. I should probably try to contact them about the error on Giant's Lunge. This already clears up a lot of confusion.

Where I have a big question about Animal Rage is, if "statistics" refers to every numerical value that gets altered, then what is the point of mentioning "3rd level animal form spell" since the differences between 2nd and 3rd level animal form are statistics and temporary hit points (also excluded in Animal Rage)?