Just remove healers.

[SieyaM]

paladin and dark knight?

tanks are kind of in the same boat sure but their damage rotations are all different beyond "this one has assize, this one has energy drain instead, this one has phlegma instead, this one has earthly star!"

in fact they dont even have the same dps pattern as each other, unlike a certain role i know

I know this is an old post, but given this graph (which for some reason only includes 2 tanks while including all 4 healers) it looks like the difference between WHM and AST are very similar to the difference in PLD and DRK, one has a much more steady line of DPS while the other has a few higher spikes.