Wrong data?

So, I got my targe shield here with 3 defense 1 protection and rank 7 shield mastery. It says rank 7 gives 15 defense, 6 protection, 3 magic defense, and 1 magic protection. When I equip my targe shield I gain 16 defense, 8 protection, 2 magic defense, and 1 magic protection. The numbers don't seem to add up, or am I missing something here?

Ehh check enchants on shield/reforge/Artisan?

No enchants, reforges, or artisans.

Try checking with another medium shield?

Checked with my 3 defense 2 protection Valkyrie shield. The only thing that changed was 1 more protection from the shield.

Hmmm, well rank 6 seems to match up, and my 1 extra defense might have been from switching to my bow with its level 10 str reforge, but I'm not sure on that because I think I tested with equipping and unequipping. Darn my bad memory. I'm not sure on those other parts though...

I think I'll just conclude my stats were weirded out. I just had this thing where I had 1 extra protection on my character screen until I relogged. Then it went away.