The Striking Tree versus Turn 2

[saeedaisspecial]

He was taking exceptionally low damage during the fight. T2 wasn't taking exceptionally high damage. That's the difference.

One fight left almost every intended mechanic in the fight. The other completely removed all but one mechanic, the difference is huge.
Turn 2 enrage made the fight far easier, as noted by all the clears that suddenly happened. I can't think of many groups I heard of that had trouble outhealing Turn 2 enrage when people ran three healers. I often heard people calling ADS a "loot pinata".
In Ramuh, you still had to deal with the Balls, you still had to shock people to break terror, you still had to break the teathers, 90% of the mechanics are still there. The difficulty of the fight is still far higher than Turn 2 enrage. Even if the tank damage is lower, the rest of the raid damage and raid mechanics are still far, far higher.