Miscalculation: Estimated Changes

I know that it says "estimated", and that it's a new feature you guys added with patch 6. But here is a silly case of miscalculation. Notice how both items are nearly identical, yet I lose health and damage? I can understand the damage reduction drop, since there is a difference in the armor.

But, thought I'd submit it for ya:

http://i.imgur.com/dlQKQ.jpg

Still occurring as of today.... same trick with a helm that is +3 to all and a helm that is +4 to all