No, my dragon has never "Dodged". Don't think it has parried either, although this would make sense being able to "bat away" an incoming blow. The mobs Missing me, yes I see that all the time.
But what I have noticed was that after playing for awhile with maxed out evasion training points, and them moving it back to get damage up again, that mobs were hitting alot more and I was loosing health alot faster. Evasion really did make a difference. Taking 200 evasion away will be felt for sure. I'm not sure the point of the change if "Dodge" is also being added. Sounds like a wash.
If they wanted to make a benefical as well as a "logical" change, it would be to add a parry chance. Obviously it would only apply to melee.
Maybe "dodge" is being used since it can work with with spells as well (or am I thinking of Block). If so, then chance to miss spell hits might actually improve thanks to dodge, whereas the melee chance to evade is a net wash. And the overall effect is a little better spell evasion.