The British Arts Council has this thing called YouWriteOn.com. It's like Authonomy.com but a bit more formal--and far more stringent in its requirements. So I put up one of my manuscripts I'm shopping around (the Death of a Young Lieutenant script) and finally received two reviews--you need five reviews for it to be considered by agents, publishers, etc.
What's interesting about the reviews is this; both liked the story. But one was either an agent or editor. He gave good ratings on the story, plot, dialogue, pacing; and then a detailed drubbing on Standard British Grammar. The second reviewer was just a reader and a potential buyer . . . as well as a writer. Loved the book. Yes, he saw some grammatic 'tics' but he was more interested in the story.
And it makes me wonder--do editors 'nix' a story because the story is no good? Or do they hit the waste basket with it because of too many technical errors and they don't want to mess correcting it?