Any sort of parse is by itself unreliable.

People would, in for instance XI, measure their damage output and those of others, not taking into account that:

A) They did not mention that they were parsing. So they themselves would blow all their abilities all the time and eat food while others would pace them out as normal.
B) The person parsing would have a higher damage output they would show-off on boards all over, disregarding that they never dodged an attack since they would stop attacking for a moment, went so wild they would (almost) pull hate off a tank and generally would waste the healer's MP by needing to cure bomb them to keep them alive.

Not to mention all sorts of factors a parse doesnt include.

We dont want this. We can tell with ease who is up to the task and who is not.