You still haven't given a good reason as to why hardcore is balanced.
The only "balance" is that every weapon kills with one (maybe two) bullets, so they're all equally deadly in theory. But then, since some have big recoil or are slow or have restricted range issues, they're only equally deadly in some theoretical land where usability doesn't count for anything. Thus, you have to stick with the few weapons that have low recoil and aren't snipers, LMGs, or shotguns and then aren't bad out of the remaining subset... which leaves you with about five guns out of 22.
In other words, you just use the M4, like you're doing, because it's clearly the winner in hardcore mode and the only one truly worth using. How you can call being forced to use one gun balanced is beyond any human logic, Brizz Jr. The P90, which is only a bit unbalanced in normal mode because of its large clip, is much more unbalanced in hardcore because rather than taking 3-4 bullets per kill like it should it only takes one... without Stopping Power.
I wouldn't expect a hardcore mode enthusiast to get it, but when every gun does the same damage (which hardcore mode enforces via 30 health), the only thing left to decide on is which is the easiest to use. And then, since power is no longer an issue in any situation, perks, silencers, and ammo concerns are null and void as well. In "hardcore" mode you get to use the ideal loadout every time for every gun and every map and every situation -- a silent weapon, Bomb Squad, UAV Jammer, Dead Silence. No one will ever know where you are and your gun will be equal in power to every other gun when you should be totally gimped in the power department like in normal mode. Hardcore mode effectively neuters everything interesting and balanced about the game and reduces it down to M4s and tubes -- which, need I remind you, become incredibly overpowered because they no longer have a small kill radius as they were designed yet are completely unavoidable.
What you're doing is playing CoD4 at its easiest and claiming it's balanced. Congrats.
But I'm done trying to break down your impenetrable ego and fill your brain with a little common sense. You're dumb. End of story. I quit.