That makes absolutely no semantic sense. It really is arguing for the sake of arguing. The word "full" means, according to
wordreference.com:
1. holding or containing as much as possible; filled to capacity or near capacity
2. abundant in supply, quantity, number, etc: full of energy
3. having consumed enough food or drink
4. (esp of the face or figure) rounded or plump; not thin
5. (prenominal) with no part lacking; complete: a full dozen
6. (prenominal) with all privileges, rights, etc; not restricted: a full member
7. (prenominal) of, relating to, or designating a relationship established by descent from the same parents: full brother
8. filled with emotion or sentiment: a full heart
9. (postpositive) followed by of: occupied or engrossed (with): full of his own projects
10. powerful or rich in volume and sound
11. completing a piece or section; concluding: a full close
The point that I'm trying to make is that no company should use the word "full" when it has no plans of using it. "Full" should only be used when they meant it. It adds nothing to this specific case, because if the newsletter had said "you get a free copy of Crusader Kings II" (notice I deleted the word full) there would be little room for expectation on a FULL game!
Now all it does is upsetting those fans who are not stupid enough to know what words mean.
Besides, if it's a gift, and it's stripped down to the bone, it's not showing the best of intentions is it? And GamerGate's "CK2 Collection" is not what it used to be. It's complete now, but when I bought it it only had a few DLCs included, and Sword of Islam wasn't one of them (and in all honesty I think it should have been).