Stop running around solo. Since you aren't that good it makes you a free kill. ( no troll just being honest)

in a 1v1 scenario, heavy always comes on top as long as below conditions are not applied.

-against shotgun in close range
-against almost anything outside your effective range while inside enemy's
-against enemy with cover/height adv while you do not
-against anything from behind

best way to get rid of all conditions above is ride in an LAV. That's why I play ambush almost exclusively.

Whenever you get solo'd its probably because of above conditions. I feel like you are exaggerating and to your op.. Hardening mods would be awesome!

Heavys do indeed have the largest hitbox, pretty obvious. Ive found that shotguns do the most damage to heavys as well. Saw my buddy in a proto assult get shot by a shot gunner and it hurt his sheilds before the shot gunner died. The same shot gunner came by me and did more damage to my shield than his, and he was using the same weapon the whole game. The shotgun has spread, so they score more hits on us than the other classes, because we have the larger hit box. We are also the slowist class, so it is easier to hit us in general so we are in trouble against the more skilled and crafty players, as this enables them to slow us. They will be able to get out of our HMG range and do what they like, or even worse, get behind us. If your using an assult rifle unlike true heavys, the effective range promblem isent really a promblem for you. For 1v1 you should usally be winning because you should be getting at point blank to the enemy, be it murder taxi or using objects to sheild yourself from fire as you advance. Yes there are some people like G-Slick, Regnum, and the Zitros who can solo a heavy at any range, i have trouble taking them down at point blank as well. For them you need to run gear at their level and dance as well as they do. And iknow, our proto/advanced gear is expensive. So if you want to be on top, be prepared to spend cash and dont be a ****** and charge 5 enemys by yourself. Most of the time your going to die trying to kill them all. a A good heavy will limit himself to 3 people at a time, but even that can be difficult if they are good at the game. So as mentioned above, play ambush. theres alot of 1v1 and 1v2 that heavys can excell in

I do run around solo and mostly kill everyone - until a name corp player comes a long. I don't think my skill has anything to do with the problems though. If it was just a skill issue, every so often I'd be able to trump one of the named players in the better corps - but it doesn't happen. And the reason I notice is our stats thx to your proto suit are very similar - yet your fast as hell with a smaller hitbox.
I'm not talking full on game, I'm speaking of 1v1 end game scenarios between players. Heavies blow.

So you basically said you run around solo and mostly kill noobs. When an imperfect comes along you get destroyed. Your skill has everything to do with why you die.