From what I've read most of the light quality is based on the LED used. Most bars I've looked at have CREE LEDs, some Osram, but the question is what version (wattage, basic, XTe....). Looks like there is a big difference between actual LEDs. I wish each brand would publish usable lumen ratings. With the huge price variation amongst bars it would be nice to know what you're actually getting. Why are the US made bars 3x the cost if both contain CREE LEDS, both have same IP67/68 waterproof rating, both have aluminum housing? I truly prefer American made, but where is an extra $800-1000 accounted for?
This is false.
My cheap Chinese bars use Crees.
I would gladly bet you any of the high end brands (Rigid, Baja Designs, VisionX) would crush my lights as far output, longevity/toughness/durability, and reach. Any amount you want to bet, I'll take that bet.
It's easy to make an LED. The real science comes into directing the light from said LED. That's where your money is spent.