Sure, we can do this.
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Above is a real H11 bulb. Notice the filament is slightly off-center, and is a coil. That coil emits light in a 360 degree pattern (including from the ends). The light is slightly dimmer at each end, but for the vast majority of the filament is very even.
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This is that DDM Tuning bulb you linked above. Notice the LED emitters are flat, centered (not offset) when you look at the bulb’s “flat side”, because the mounting surface has thickness if you looked at the bulb’s “skinny side” you’d also see the the emitters are further apart, and they’re closer to the base than the filament in the tungsten bulb. The emitters are also only putting light out on two sides (assuming the bulb is double-sided), not all the way around, and not from the ends. Those emitters are even slightly recessed in the housing, so they’re putting even less light out to the sides.
The reflectors in a reflector light housing (and the lenses in a projector housing) are designed around the exact output of the intended light source and can only function properly with an identical light source.
Saying this isn’t true is akin to saying that if you put on someone else’s glasses prescription you’d be able to see just fine, or that if you held a shiny metal mixing bowl behind your light bulb it would create the same pattern as an actual professionally designed headlight housing. That’s just not how light works. Go shine a flashlight at the mirror in your bathroom. If you change the angle of the flashlight then the light will reflect back to a different place, right? That’s all a reflector housing is: a bunch of mirrors carefully curved around a very stringently controlled light source.
Now don’t mistake anything I’ve said above to mean I think the stock halogen lights are good. They’re terrible, which is why I opted for the LED projector lights in my truck. A ground glass lens is much more efficient and effective at putting light where you want it.
If you don’t want to believe me, then read this article. It features an interview on this topic with Daniel Stern, one of the preeminent experts in automotive lighting. It’s also packed with links to additional information.
https://jalopnik.com/why-most-led-headlight-upgrades-dont-really-work-an-ex-1843070472
Edit to add: Part of the reason (a big part actually) that the stock halogens suck is because the bulbs they use from the factory suck. They’re “long life” low output bulbs, which are designed to last a long time, but sacrifice a lot of output power for that. It’s a huge improvement to put quality name brand (GE, Sylvania, etc) halogen bulbs in.