Oh yeah, on that note, Bal -- every weapon or shield has a couple stats that show how much they block, which is basically what % of damage is turned into stamina loss, as well as... what's it, another stat, that shows how much of blocked damage is just totally ignored. These are important to note because, for example, the heater shield has 100% physical block, but the reduction is low, so you'll lose a ton of stamina to each hit, compared to something with better damage reduction, which would ALSO block 100% of the physical damage but leave you with more stamina.
Also, you can see how much Physical and Magical damage things block, but the amount of fire damage they block is invisible for some reason. Since that thing is the "Purple Flame Shield' and dragons were constantly breathing on it for like a year, you can probably make an educated guess.