Does anyone pay attention to these?

For example in the NYG @ SF game:
Spread is 7.0
NYG total is at 17.0
SF is at 27.0

Basically, the spread suggests SF should score 7 or more than NYG yet the totals suggest a 10 point difference.

I'm starting to notice a few strange things like this with my Aussie book. BAL -2.5 & O/35.5 was set at +100. BAL ML & O/35.5 was also at +100. Clearly you take the ML option.

Maybe I'm looking at these things a little too closely, but was just wondering if anyone else looks at these sorts of things and sees an edge?