Is Super User really doing so well in terms of question quality that it can afford this? When it's enough to enter a question's title into Google and a perfect answer to the question is among the top 3 results, it shouldn't have been asked here. In that scenario, by having it asked here, you're actually polluting search results and diverting attention away from the canonical resource.

Is this from orbit though?

@vartec well. Under normal circumstances the deletion would have been totally unjustified - yours was a viable answer. But in a busy question, moderators are expected to be on guard to keep it from turning into a complete crapfest. If, in order to do that, they set the rule that one-liners are going to be removed, and you post a one-liner, it's clear what's going to happen. It's so easy to pad an answer with a bit of meaningful information to avoid this - if you're active on any of the SO sites, you know how it's done.