I guess %-wise it makes a difference, but as I recall it goes like 55W halogen, 35W HID xenon, 25W LED (although this may have improved)
To say 33% less energy but the trade off is blinding oncoming traffic, doesn't seem that great of a decision.
It's not nothing, it's bad. It's like the funk we were in when we were still using 1 of 4 kinds of sealed beams, and Canada and the rest of the world had flush mounted headlamps with replaceable bulbs...that was like up to 1984 because I can think of 1985 when the Camry had flush headlights...
I do have 2 relic cars with adaptive xenon, one German, one Japanese. I think the German is superior as the left headlight does not swivel as much into a left turn, as the right. That's thinking imho. The Japanese, both act similarly. But one key thing to me is the leveling based on the vehicle's position, that goes beyond courtesy.