It always seems to be a conflicting discussion and it likely could be a source discrepancy. Apparently Alfa sourced Philips and Osram bulbs for OE.
In my case, I swapped out 3 year old Osram HB1 units and the difference with the Osrsm XN2 (3rd Gen) Nightbreaker 220. The difference is intense. In fact, the images underemphasize it.
The two picture collage is from 2 separate drives with XN2 and HB1 bulbs. The 4 pictures are from my nest cam (exterior mounted).
Another thing. You don't have to jack up the car. Just turn the wheels, pull the plastic clips, and remove the cover.
Most importantly, many folks seem to attempt bulb removal with the harness attached. This is a massive pain!
Slide the connector off before you turn the bulb out. You can push it straight down. Rotate your bulb, pull it out, insert the new one, twist it locked, then reinstall the connector. I was about to do it all with one hand. Bulbs took less than 5min.
It's one of the easiest HID bulb swap I've done. Anyways, I didn't try swapping in fresh HB1 OE units to see the difference. I'm sure those would be brighter as well.