An alternative to parsing?

[Waliel]

On FFLogs there is a "replay" feature that allows people to watch a fight that was uploaded in the most minimalistic of terms. You are able to see when people move, when the mob moves, damage done, damage taken, healing done/received, abilities used by the mobs, etc.

So, yes, you can actually see who is not attending to mechanics using the data from FFLOGs, replay function, and deductive reasoning.

Not to mention that if you're not doing mechanics, you either die, get a debuff or nothing happens to you when something is supposed to, and all of that shows up in the parse.

Which is all fine and dandy, but SSS doesn't account for doing said mechanics of the fight. You could meet the DPS checks on Byakko EX or Shinryu EX just fine on a training dummy because nothing, and I repeat, nothing is getting in your way. Now, try meeting the DPS checks while dodging AoE's, other people, aligning stack markers, etc.

Which is why the SSS dummy requires higher DPS than the actual fight. It's more of a gear and basic rotation check.