The numbers don't actually back this up. The simple fact of the matter is that, as it stands now, a barely average BLM will contribute equal or more rDPS to the party than a BRD or RDM that plays well enough to finish in the top 5% of their class. If your BLM is a little above average, then they can reach numbers no RDM or BRD could even dream of hitting. Similarly, the same holds true at lower levels - An awful BLM will also beat an awful RDM (admittedly by a smaller margin from what I've seen). It's true that the gap closes a bit when the players are both bad, but if BLM was as difficult a job as the people who play it like to suggest, then at some point you would see that difficulty shine through in the hands of bad players. I'm not really seeing that, what I'm seeing is that they hold their own just fine against other jobs even when the person playing them is doing a poor job.