Gravitation Slam does not appear to be adding the Awareness bonus, as above checks with Gravitation should be (for this sheet example) +9 with 5 Ranks in the Gravitation Skill and a 4 Awareness.
Thanks for the report! We’ve sorted this one out, but not quite the way you expected!
Gravitational Slam isn’t an attack roll, but a contested Gravitation roll. (So if the target chooses to oppose, they’ll roll against your Gravitation). We’ve removed the unnecessary (and incorrect, as you correctly noted!) attack roll. You’ll be able to use the “Gravitation” roll in the header of your surge on the sheet when contested.
My character with a +3 in Gravitation for example:
Thanks for the catch. 