Armored bears just sounds like the worst idea ever. Having more than one piece of metal attached to the bear is an atrocity in it's self. If the bear is wearing a soup pot on it's head that's borderline acceptable. However, more on this point later. More than that is just plain wrong. It's a crime against nature for bears to wear armor. Bears do not have thumbs! How would they put on the armor? Now back to the soup pot. The soup pot is acceptable because in NATURE the bear can come across the camp site and tear it asunder. The soup pot has a 3% chance to end up on the bear's head. In no way is this considered armor.
Now before any supporters of this armor bear silliness comes back to bite me in the butt. Saying that "What if the human put the armor on the bear?" Why would a human train such a savage beast for battle, equip it with armor, then proceed to say "it looks good"? Bears have no sense of Loyalty. They turn on you the instant they smell honey. For example look at Winnie the Pooh, he's such a terrible being. There was a time where pooh wore armor. At that time, I grew up and left all those childish ideals behind me and became an adult.