51 BD has next to no survival. Sidesteps only works if the person has no hit.Ease of capability to dish out damage can make it seem like a spec that does less damage than another actually does more.
People say MM are insane damage. Tbh a 51bd or 51nb, two of the pure mostly open combat oriented melee souls hit way harder if they are up in your face than a MM is imo. The problem is what I said, ease of capability to do damage. No-body has it 'easier' to do damage than MM/mages. 20m is nice but even NB's melee range damage is quite more vicious than the 20m filler, even though it is decent still at range for what it brings.
I see the same with warriors though, their ease of doing damage is not as easy but when they are up in your face, properly spec'd they are knocking you out way harder than a MM probably. It is kind of too bad a pure 51bd has such god awful gap filler capability and pretty much blows when out of melee range. A 51bd with the temp that pushes nearly 100% crit rate or the temp that causes the big hitter melee strikes to hit twice and add extra CP. If you don't stop that thing from wailing on you it will decimate. The thing is, all it takes is a few steps and bam, you just messed with the pure consistency. It's much harder to mess with the pure consistency of 30m+ ranged classes. That is why the people who play mostly ranged are surprised by how fast they get destroyed in melee range. As if their range damage is suppose to be that high.
I was mostly speaking on behalf of rogues and warriors as obviously mages don't have a 'higher damage melee spec' option. But, that is different in comparing a calling with melee/range roles opposed to one with only ranged. Of course the one with only ranged will probably be made more on par with damage capable of top melee range damagers. It's almost like they balanced it by giving those dudes cloth armor, 1.5gcd and more/most casting time abilities. Crazy...its like, theoretical balance or something.