Just so you know this is called an Argument from Authority, its wrong and a bad argument. If you want to prove someone wrong argue their points not their character. Dont worry, your not the only one who did it.
That being said - I hate to have annoyed you so egregiously. Allow me to clarify a few things in answering your questions.
I dont think it is appropriate for melee to out dps casters "by like 10%". I agree at the end of a raid calc "equivalent" forms of caster and melee should be equal. Meaning I agree, SAM should do as much damage as BLM on somewhere like fflogs. However, I maintain that casters are less punished by mechanics than melee and that is the reason why caster should do marginally less damage than melee. To account for this fact. It could very well be the case that it is unbalanced right now, I never commented on that. Only that the reason for melee generally being higher than casters is the aforementioned opinion. SE seems to agree with me based on their treatment of the two roles thus far.
See above for a bit of debate advice. At least you have a melee lvled. The other poster wanted to hit me with a bat that could inversely be used on them.
I did go look at fflogs after the other poster mentioned it. As you say generally speaking good players fall in a 1-2% distribution as far uptime is concerned. I see some BLMs with more uptime than some SAMs and vice versa. I dont disagree that BLM should be equal to SAM, just in how other posters think it should get there. In all fairness Susano may have been a poor example, I underestimate how critical people in the forums can be. I only brought it up to point out that when a mechanic must be dodged, it is generally true that melee will have a longer time before being able to return to its main rotation than a caster. Of course there are ways to cheese that and likely any example I would have brought up would have been met with a similar response. I think if you looked at the breadth of content in the game it is generally true that casters have more uptime than melee due to mechanics, which is why historically SE has had melee do more damage than casters.