I would rate Spec Ops the same as Gamespot - 6/10
The number at the end of professional reviews rarely means anything. If you actually read the reviews large website frequently have reviews filled with complaints that end 8/10 and reviews that sound positive ending with 6/10... these however are all largely positive reviews.
Eurogamer - 8/10 - http://www.eurogamer.net/articles/2012-06-26-spec-ops-the-line-review
Destructoid - 8/10 - http://www.destructoid.com/review-spec-ops-the-line-230003.phtml
Gametrailers - 8.3/10 - http://www.gametrailers.com/reviews/mybtjz/spec-ops--the-line-review
Console Monster - 8.5/10 - http://www.consolemonster.com/article.php?id=0000001167
Worth Playing - 8.5/10 - http://worthplaying.com/article/2012/7/10/reviews/86568/
Sixth Axis - 9/10 - http://www.thesixthaxis.com/2012/06/26/spec-ops-the-line-review-ps3-xbox-360-pc/
These are all professional critics, not just random guys on blogs or on YouTube either; so it looks like GameSpot is the exception to me.