Why does +1 Defense Bonus cost less than +1 Block?

[sir_pudding]

Originally Posted by sjmdw45

GM: it's a random hit location, so [rolls] the scimitar hits your right hand. [starts to roll damage]

Bob: oh, my hand?! My right hand has an extra Deflect +4 on it, so the parry is successful after all.

GM: lucky for you. Here comes the next peshkali scimitar... [rolls]

IME, many players would expect the GM to catch this.

At any rate, I would qualify this as an annoying exception to the normal game mechanics.