Most lot cars are not spec'd the way a performance oriented driver might want.
Macans? Of course not. The public doesn't care one bit about performance. Its a CUV.
No reading required.
If you did some due diligence you would have found that the IIHS is testing headlights now. No Porsche will ever be in it but the facts are out there. FMVSS108 is fact. It is the law within the US and all OEM headlights must fit within the boundaries of the law. Generally, OEM HIDs put out 3000
lumens. There is no consistent standard I know of for LEDS. FMVSS108 deals mostly with angles and cutoff. However, the IIHS knows there is much more to this than lumens and hence actual, on the road test, just like you mention. Imagine that ...
Testing standards Headlight evaluation
TL;DR? The best results come from systems that follow the road, like PDLS. But how do LEDs stack up against HIDs and Halogens? Forget about HIDs, let just look at the much weaker system, Halogens.
All cars are not created equal
Mercedes C Class rated POOR with LEDs Vehicle details
Nissan Altima POOR with LEDS Vehicle details
VW Passat POOR with LEDS Vehicle details
Audi A3 POOR with LEDs Vehicle details
Nissan Rogue POOR with LEDS Vehicle details
BMW 3 Serieos Marginal with LEDs Vehicle details
Lincoln MKS Marginal with LEDs Vehicle details
You get the point.
But wait, the Honda Accord is rated Acceptable, with, wait for it ... Halogens, not even HIDS Vehicle details
And the CR-V Vehicle details
etc. so much for the mighty LEDs headlights.
Do real testing. Lend a Macan with LEDs and one with HIDs, both with PDLS, to IIHS and see what the say. Come back with real empirical data according to some standardized test. Then we can talk about which is better. Until then, Proof by Assertion means nothing.
This is no different than those bar room napkin racers. Go to the Ring and put up a time. Then we can talk. Same here. Get some standardized testing results from an independent organization.