User blog comment:Gsimenas/Call Gsi Button/@comment-26391060-20140808093650/@comment-6697950-20140808114212

Both ALO and GGO have randomised avatars, as far as I remember. Though I'm not sure if the height is affected by real world height or not. I do know that avatars imported from SAO are based on their real bodies, but Kirito created a new avatar, so this doesn't apply to him. Thus, I have no idea whether his ALO and GGO avatars account for his real height. All the more reason not to change anything just yet until we have more solid references.

The rule doesn't specify if it also applies to outdated data or not. You're going to have to ask Dim about that, as I don't know whether they accounted for this when they created the rule.