What type of screen on time are people getting? I don't know what the expectations are, but the bottom line is, any phone will use up the battery while the screen is on. If you're getting upwards of 4-6 hours with everything on, I'd say that's pretty good, especially if the idle discharge rate is low.
It should be noted that it took about a week or more for my Turbo 1 to settle in. I had a Droid Maxx before that and had the initial impression that the first Turbo was a big drop off, but after a little over a week with it, I realized it was really about the same. I never got 2 days with heavy usage, but could easily get 2 with light usage, which is really what Motorola is claiming. They never said you can get 48 hours with heavy usage. That would be amazing but that's not what they're advertising. I personally don't think their claims are false as long as you can get up to 48 hours with light/moderate use.
If I can get a full day with 4-6 hours screen time (which is what I consider heavy use), I'm totally content.
It should also be noted that games will use a lot of power, so don't expect to get 5 hours of screen on time if that time is spent playing games.