See, this is the sort of thing I'm talking about. You snap at someone (or appear to -- and if you're not, it may be the exclamation points thing again) before actually thinking about how you're sounding. For example, I'm not trying to insult you. I'm simply saying that, yes, you did sound like you're overreacting, and yes, you were a bit vague in your response while you were doing it.
As for your review, it's still a shortie (as in, brief and not particularly detailed) because you don't actually make things clear for him. You don't explain why he needs all that, considering the concept of his story. (Note Astinus's detailed response compared to yours. See how she does things like point out specific parts of lvl99's fic and ask questions about it? Pointing out specifics directs the author's attention to that part of the story and encourages them to meditate on a particular set of questions to help them figure out how to flesh it out more or otherwise fix what's wrong.) In general, saying that something's missing without really going into detail as to why it's necessary doesn't tell the author much. It just says something's missing and leaves them in the dark as to what their writing is lacking.
In other words, editing four times is great and all, but you've got to add more to your reviews. Don't just say the story needs dialogue, plot, characters, et cetera. Really look at what he's trying to do and point out specific weak points to give the author examples as to what can be improved. If you just give a sentence or two about what's wrong, you're telling them you couldn't be arsed to actually read what they're saying.
Moreover, in any case, yes, it's a history, which is perfectly workable in the fanfiction forum. However, it doesn't necessarily have to have dialogue so long as it's executed a certain way -- as in, answers the questions Astinus brought up.
Edit: As a side note, while we're talking about reviews, when commenting on someone else's grammar, it's generally a good idea to proofread your review. That way, it's easier for the author to understand (I had to read over "The reason I was today = ? should it be :the reason I was happy today?" a few times to get what you were trying to say there.), and the author's more likely to take your tips seriously because you practice them yourself.
In general, I've got a guide to reviewing that's stickied in the Writer's Lounge. As egotistical as it may be to say this, I wrote it to help people who want to review to help others. It'd be a good idea, if you're confused by what I'm trying to say, to check it out.