Most editors will tell writers up front what they are asking for. That's what 'guidelines' are for. And writing a rebuttal to a negative response to a query letter is not good customer service.
It amazes me sometimes, how many writers don't seem to get that they have to impress the guy with the checkbook, and not the other way around. Editors, on the other hand, seem pretty clever about remembering that they have to impress their customers--the reading public.
Why do you suppose that is?
(xposted to cranky_editors)