Congratulations on missing the point once again. What you just described was not ninja looting, it was a loot scam. The difference between them is explained in the article about Ninja Looting and Loot Scamming that you quoted but obviously never bothered reading.
*sigh*That would be ninja looting, taking an item that shouldn't belong to you without the permission of the raid which would entitle him to make a ticket, retrieve the item and give the ninja a ban.
Since you clearly never bothered reading the very clear explanations of what the difference between Ninja Looting and Loot Scamming is, and are still saying the wrong thing over and over, I'll give you the link again.
http://us.blizzard.com/support/artic...rticleId=17761
Now. Read them. Then you can learn what the difference between Ninja Looting and a Loot Scam is.