Yes, it is entirely possible to not understand what I'm saying if one tries very hard.
For simplicity, imagine a situation where a meta highlander is 'dueling' a brawler atlas. If contact is made at longer ranges than ~300 m, the atlas doesn't stand a chance. If MWO maps were the size of 600 m x 600 m boxes, we could argue that the current long range vs. short range weapon balance is ok, because in roughly ~50 % cases the fight happens also in brawler ranges. But maps are much larger than that. If contact is made at ranges 300-1000 m it will cost the atlas an arm and a leg (well most probably both side torsos) to get close and by the time his weapons would start to have an effect, the atlas has been severely beaten.
So it doesn't matter that the metamech can make "only" 10 points of damage at extreme range, because SRM-based brawlers make exactly 0 damage until they can see the eyeballs. Sure, I've managed the leg the occasional jenner at 500 m with AC/20 even with the slowed down projectile speed but effectively we are talking about the highlander having 3x-4x the range of the atlas. This is of course fine, because mechs have different roles but when the brawler atlas is FINALLY in range, it should be devastating to anyone. The first instinct of a metahighlander upon seeing an atlas close by should be to flee, not go "well, I'm pretty much on even ground, let's see if I can take him out".
Breakdown is roughly something like this:
close range (0-270 m) damage potential, Atlas: 66 alpha
close range (0-270 m) damage potential, Highlander: 40 points pinpoint (0-90 m less of course)
medium range (270-600 m) damage potential, Atlas: 0 (sometimes u hit with AC/20 but it's nothing significant)
medium range (270-600 m) damage potential, Highlander: 30-40 points pinpoint
long range (600-1000 m) damage potential, Atlas: 0
long range (600-1000 m) damage potential, Highlander: 10-20 points
Please don't get hung up on my numbers, which I'm sure are not completely accurate but I think you should be able to get the point. So maybe you think that "well, as a brawler you're not supposed cross the vast glaciers of alpine but sneak into their backs and hit them hard". Well that's what I basically always do. But to engage the 2 highlanders I just surprised alone from behind at 200 m leaves me usually quite broken and many times dead, because it is so easy for them to maneuver with JJs and keep me at 90+ meters so that their PPCs work. If they now nerf the SRMs, I don't think brawlers will have a chance.