Imo dmg difference should be less than 1% so that the only real defining factor of the tanks is their defensive tool kit. Right now its the exact opposite. The tool kits are more or less homogenized with only slight variations coming from their short job exclusive cd but even those are just boiled down to a heal, shield/ehp, or flat mit (as of 6.3 for PLD). I feel like if dmg was more or less the same you would see tanks valued for their defensive capabilities in certain situations since dmg is not a factor.

Regardless I'm curious to see how far they dig themselves into this forced burst meta.