http://www.smogon.com/bw/pokemon/giratina
Boosting Tank section:
"After a Calm Mind, it is practically impossible to OHKO Giratina with any attack; even a Choice Band-boosted Outrage from Adamant Zekrom) fails to do so due to its sheer base defensive stats."
There is a lone parenthesis after Zekrom that should be removed.