The problem is you along with most of the Dust community has not been around long enough to know what a true heavy is. I was one in closed Beta and if you think the heavy of this day is terrible you have not seen anything. In closed Beta I was able to crush an oncoming LAV with my HMG and then turn and kill up to 3 people before I was surrounded. My average was 7-8 kills before I was succumbed to damage, now I am lucky to survive a SG.

I never mentioned the Assault MD that thing really is terrible against heavies, it does have enough DPS because it focus on Splaah Radius as it's main perk.

As for telling me that killing Heavies with a Mass Driver is a complete lie, is a lie, I do it regularly. You use a flux grenade to take the shields first and then the armour crumbles under the explosove damage profile. Even with all the resistamces under the sun.

From what I can tell Direct Hits againsts heavies don't recieve the 25% splash damage reduction, pair this with fire rate allowing you to duck in and out of cover, the Huge Damage of the Breach Mass Driver, the insanely powerful damage profile, additional armour damage from Profciency skill and damage mods the Heavy will, practically melt, however that doesn't mean you can jist walk upto him without cover and try this he still has a 900DPS HMG. But direct hits screw up the damage indicator, which paired with his tacnet blindness, makes him easy prey.

Every single one of those tactics works I have used them successfully within the last couple of weeks to remove a heavy from an advantageous position.