I think average game time might even be longer. There's 2-3 people playing who are already past the 14 hour mark and not even close to finished yet. Given that the speed run trophy is for 6 hours (the other games being closer to 3), I'm confident it's going to be a really meaty campaign.
Yeah you are right, I edited. Most important part from the impressions though

Gameplay is fantastic. Shooting now has a weight to it and the freedom of how you tackle encounters feels great.
We kinda already knew this from the beta, but definitely good to hear