I think he means it could be good for you because of parry's intialy lower DR, until you stack parry, in which case it becomes a con.
I realy did miss 20 Agi. But I am not so great at working out AGI-avoidance. I have AGI on my weapon too and some of my gear side grade options are deep dodge. Is it possible to DR dodge so high (in current patch) that armsman is no longer the pauper (malygos fight arguement aside). I doubt I am there yet but it makes me think.
I think the biggest debate here is on STR, because there so many steps in the logic. STR gives some 2 AP + 1/2 BV. (please correct me if I am wrong with #s)
AP is easy to understand, but BV is so situational. We all know it an love it. But do we need it over classic tank stats? How will we know?
With all the other options available to us, it's hard to choose something we are not sure if it is the best option in any situation.
Without being able to point to a maintankadin.failsafedesign.com thread that agree's with me I would feel less confident going into lolnub arguements with other tanks on my server.
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At 540 Defense, when the tooltip says you have 5.6% chance to be missed, you really have a 4.11%.