He shouldn't have to "be careful" with his opinion. He thinks "Goblins" is mediocre, and he has as much right to say so as you do to disagree. For what it's worth, I think it's "Goblins" has some good ideas, but gets so mired in mapping out each moment of horrific violence that it often forgets to tell any story for page after page. It's NOT just that Goblins has less updates, it's that less happens in 10 pages of Goblins than one page of OOTS...and that's taking into account the fact that sometimes, nothing really happens in OOTS for pages at a time.