It is awful how poorly Odin works. On Tonberry he spawned on the North Shroud not long ago and the entire zone was a sea of the little red DCed symbols. It was pretty amusing except it knocked one of our raid members off the server for a while.

Even more recently (yesterday, in fact) I was actually able to get Gold, but that hardly improves my opinion of the fight. I went as MNK for the LB and shoulder tackle was hilariously rubber-bandy. I would hit it, wait 5 seconds, then suddenly be somewhere way far away from Odin. Sometimes I would be in the circle (or think I was anyway) for Odin's AoEs and not be affected at all and other times he would be standing somewhere else and suddenly I'm dead. Some of the mechanics like the vulnerability debuff from standing in front are completely meaningless since it's impossible to tell where Odin is facing at a given moment.