Is defense the best avoidance stat?
From the perspective of gearing a warrior or a paladin, after becoming uncritable is it better to gear for defense or dodge rating when building an avoidance set? In BC the clear winner was dodge rating after uncritable for avoidance, but I'm wondering if there is a gear level where diminishing returns will favor defense. Defense will spread avoidance between dodge, parry and miss instead of focusing it in one catagory. Since we are speaking directly of avoidance I suppose all of the above considerations apply to Death Knights as well.
I'm also not sure if I'm clear on the meaning of diminishing returns. Are these diminishing returns in the sense that stacking armor provides diminishing returns (i.e. the more you stack the less it's effect)? Or are these diminishing returns more akin to the sort applied to stuns (i.e. your first chance to dodge is at X% but the next incoming hit has a smaller chance to be dodged until you are eventually hit)?
If the diminishing returns are like armor, it seems that spreading avoidance amongst the three avoidances stats should provide a good bit of net avoidance while minimizing the impact of diminishing returns.