I don't know if I could disagree more, akshually. Maybe if all I played were FPS games it'd seem a rehash of mechanics, but from my experience...this is untrue.
I've not yet found an FPS in which the knife was little more than a place holder after acquiring a better weapon, whereas in Turok it's generally the best weapon in the game. The possible exception being RepCom, but the knife in that was a melee attack vs being a separate weapon. Same with the bow. I've not played an FPS (very few, for the record, I've played have even had a bow) that actually kept the thing useful (And generally better than the sniper rifle) throughout the entire game.
Same for the stealth element. It's actually useful in Turok, and rarely is in other FPS's. In fact...I have trouble thinking of another FPS in which the stealth element sections were not a pain the rumpus.
Basically, I think if you play the game as a standard FPS, it's a standard FPS. If you play the game using the methods and abilities the devs programminated (AKA: The 'right' way
)...entirely different game. At least compared to the FPS stuffs I've played.
There's also the fact that dropping a Kraken with a flamethrower was one of my favorite boss battles ever, thank you very much. XD