Most people here still doesn't understand that in this fight, you have to move BEFORE the attacks start.
You have to start running BEFORE plumes appear, you have to watch out BEFORE Landslide appears, you have to move to the side of the battlefield BEFORE bombs spawn.
No matter how good your connection is, there's 90% probability that you'll get hit by a Weight of the Land if you don't start running BEFORE it starts.
And, you don't really need 3 healers, did it as 1WHM and 1SCH, both under the full DL gear (AK/DL + Garuda weapon) and we went really fine, because we knew that after Landslide there's Mountain Buster. Just use Virus on Titan and Stoneskin con the tank just before Mountain Buster and you'll be fine, if you avoid aoes.
Stop asking to change the fight, it's good exactly the way it is now.
Btw, I'm on a laggy PS3.