Forum:Turret page missing armour stats

I'd like to mention (don't know if this is the right place) that the Turret page is missing stats on how much armour they have. The page has lots of non-obvious goodies so this seems to be the only gaping hole.

On that topic, I'd also like to know how useful Siege Commander (mastery) is. Towers are immune to armour penetration so is -10 armour much more useful than we think?