You think bars are the answer? LMAO. How many bars needed to stop a vet3-5 ober/fall? Falls practicly kill the squad in 1 volley of fire. If I had time for some cheat mod, I'd do it here. How many vet3 2x bar rifles do you need? I'm guessing obers need at least 3 if not more once they can apply suppression.
How many bars do you think you can get without map control?
you use armour, indirect and focus fire against fully vetted AI specialists. you should be doing this long before you feed these units to max vet.
the cure for your problem isnt breaking the game so that it works for you but instead to stop being bad and blaming the game.
under no circumstance should a 280mp unit, even with 120mu be anywhere comparable to one 50% more expensive. no amount of "balance" will make that a possibility, nor should it.
BAR rifles will beat anything BUT axis dedicated AI squads. thats LITERALLY the point of the dedicated AI squads.
again, stop being bad and figure out how the game works instead of expecting one unit to counter its own hard-counters.