Measuring quality (narrow focus)

We have some quality standards related to flagged revisions and these may help in separating the baseline quality and substandard articles. On ru.wp (which is different from de.wp but it is closer to what will be implemented on en.wp) the standards to flag an article are:

• does not contain obviously wrong statements, obvious copypaste and obvious defects like broken templated; basically, has not been vandalized;
• does contain at least one category;
• does contain at least one internal link;
• is not a speedy deletion candidate;
• all other problems like for instance lack of interwiki or sources are clearly marked.

Drawing a line between a baseline quality aricle and a GA-level article can be more difficult but I think it is clear that a two-sentence article is not a GA.