There is no way to eliminate glare onto the glass.. just no way. Go sit inside a vehicle with in inside strobes/flashers and you will see what i mean. A good way to help that is to literally gasket seal between the light enclosure and window. But then again.... meh..
theoretically you can get similar results by putting hids in your high beams or projectors in your fogs (with no cutoff). This light is nothing more than a bulb with a reflector that has no cut off. The photos are misleading and they show the low beam, not the high beam in the comparison shot!
I call shenaningans.