I'm strictly speaking of "amount of time it takes an average player on first playthrough". So without "completism".
What I'm saying is, the average for BB hovers around 30 hours for first playthrough. Some players will be faster and be in the 20s some players slower and be in the 40s, but on average it hovers around 30. Demon's Souls, I completed for example in 40 hours. But the overall average is again similar to BB and around 30 hours for first playthrough. Again, I'm not counting how big are the areas or the amount of content, just *time*.
Dark Souls 1 for the majority of players was 50 hours on first playthrough. Most of the players I personally know hover around 60 hours. And again there will be case-limit that complete it in 40, as others will complete in 70+. I don't know if it's a matter of LOTS OF BACKTRACKING. It might even be that the *content* volume is similar, but due to the backtracking DS1 forces, it also EXTENDS the playtime of the game.
But if DS3 is, on first playthrough, on average around 30 hours, then it's very far from DS1.
Again, it can be because of longer load times, a lot more backtracking, less stalling. But it seems a fact, looking at the numbers, that DS3 first playthrough time is the shortest in the whole series.
Have I explained myself?
It's a fact that being able to teleport around the would instead of walking across it WILL shorten the playtime. So content may as well be similar to DS1, and more than BB, where playtime was extended by having to port back and forth to the hub and wait minutes just at the loading screen. So DS3 might have more CONTENT, but still take sensibly less to complete?