I re-read the entry and think I answered my own question. I downloaded it last night and started reading right away, not a good thing to do at 2am when you been up for almost 18 hours.
Anyway, the creatures defense score already factors in the Size and Dex bonuses into the equation, so if you decide that they can do the parry option it would be the following
Parry = 10 + 2 (Defense) + 5 (Strength) equaling 17
Dodge = 10 + 2 (Defense) equaling 12
In my previous parry equation I was not factoring in the Dex bonus/penalty. I forgot that Dex goes against your to hit.