The most effective Cool Down defense Warriors have is, Vengeance and Bloodbath, used in conjunction. One turns all your attacks into HP Leaching Attacks, the other puts up an automatic counter to all attacks used against you. The net effect is that 50-80 HP is canceled out on all attacks used against you. It's unfortunately more effective against large mobs than bosses, and the effect doesn't last quite long enough.
Yeah, going to disagree. Vengeance and Bloodbath only gets good returns when there are lots of enemies. So basically trash. For bosses that are actually a threat, Vengeance is better used as a wrath builder during phases where you need to use IB but Infuriate is on cooldown.
I'd say our strongest defensive cooldown is also our strongest offensive one, Berserk. Combine it with IB, and preferably Inner Release, and you can get some great returns. Make sure Storm's Eye and Maim are up of course.
The gear/HP you listed on last page should be good for Titan. There will still b OH SHI- moments though, and really this is a test on your healers. Even if you play perfectly you gotta accept that there's not much you can realistically do to mitigate the kind of damage he puts out in post Heart phase.
Best thing to do is to learn his rotation, get it down by heart, so you can always be preparing for the table flip. Get used to how much damage you take from it and find a reliable minimum HP needed to survive. If you are not at that threshold then IB or Thrill. If you're a bit lower than usual a little bit before use Convael to help healers get you topped off. Healing after a flip can be helpful, but there is a slight lull in attacks there and generally speaking surviving the flip is much more important than healing after it.
No matter what happens, you will eventually run out of cooldowns, and at that point all you can do is trust your healers. Personally, I found the bigger cooldowns like Berserk'd IB or Thrill were best used for the MB that comes after bombs, as that is likely your healer's busiest time and they may not be able to top you off. In comparison the one that kinds after gaol is a pretty peaceful time - as peaceful as Titan gets at least.
Hope that helps some. I don't really keep up with everything in this thread, so if you have any questions (and are on Ultros) you can whisper me in game. Name is Krael Bastion.