Yeah, I know what you mean. I don't know WHY but some games on 5D have different "default" lines that they go off as the official spread even though one side is like +110 and the other side is -130. They don't use -110 on both sides as their official spread. By "default" I mean when you go to the NFL page, that is the line that they first show for the spread.
For example, RIGHT AT THIS MOMENT, for the DAL/DET game:
DAL -7 1/2 (+110) shows up as the default. This is the spread.
DET +7 1/2 (-130) shows up as the default. This is the spread.
DAL -7 (-110) is available as an option, but you're technically buying 1/2 point to get this.
DET +7 (-110) is available as an option, but you're technically selling 1/2 point to get this.
For 7 point teaser, it is DAL -1/2 since the spread is DAL -7 1/2.
For 7 point teaser, it is DET +14 1/2 since the spread is DET +7 1/2.
Same weirdness goes for JAX/IND game, DEN/MIN game, NYJ/WAS game, etc.